Cálculo Exemplos

$4 x \sec (x)$

Etapa 1

Encontre a primeira derivada.

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Etapa 1.1

Como $4$ é constante em relação a $x$ , a derivada de $4 x \sec (x)$ em relação a $x$ é $4 \frac{d}{d x} [x \sec (x)]$ .

$4 \frac{d}{d x} [x \sec (x)]$

Etapa 1.2

Diferencie usando a regra do produto, que determina que $\frac{d}{d x} [f (x) g (x)]$ é $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ , em que $f (x) = x$ e $g (x) = \sec (x)$ .

$4 (x \frac{d}{d x} [\sec (x)] + \sec (x) \frac{d}{d x} [x])$

Etapa 1.3

A derivada de $\sec (x)$ em relação a $x$ é $\sec (x) \tan (x)$ .

$4 (x (\sec (x) \tan (x)) + \sec (x) \frac{d}{d x} [x])$

Etapa 1.4

Diferencie usando a regra da multiplicação de potências.

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Etapa 1.4.1

Diferencie usando a regra da multiplicação de potências, que determina que $\frac{d}{d x} [x^{n}]$ é $n x^{n - 1}$ , em que $n = 1$ .

$4 (x (\sec (x) \tan (x)) + \sec (x) \cdot 1)$

Etapa 1.4.2

Multiplique $\sec (x)$ por $1$ .

$4 (x (\sec (x) \tan (x)) + \sec (x))$

Etapa 1.5

Simplifique.

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Etapa 1.5.1

Aplique a propriedade distributiva.

$4 (x (\sec (x) \tan (x))) + 4 \sec (x)$

Etapa 1.5.2

Reordene os termos.

$f' (x) = 4 x \sec (x) \tan (x) + 4 \sec (x)$

Etapa 2

Encontre a segunda derivada.

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Etapa 2.1

De acordo com a regra da soma, a derivada de $4 x \sec (x) \tan (x) + 4 \sec (x)$ com relação a $x$ é $\frac{d}{d x} [4 x \sec (x) \tan (x)] + \frac{d}{d x} [4 \sec (x)]$ .

$\frac{d}{d x} [4 x \sec (x) \tan (x)] + \frac{d}{d x} [4 \sec (x)]$

Etapa 2.2

Avalie $\frac{d}{d x} [4 x \sec (x) \tan (x)]$ .

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Etapa 2.2.1

Como $4$ é constante em relação a $x$ , a derivada de $4 x \sec (x) \tan (x)$ em relação a $x$ é $4 \frac{d}{d x} [x \sec (x) \tan (x)]$ .

$4 \frac{d}{d x} [x \sec (x) \tan (x)] + \frac{d}{d x} [4 \sec (x)]$

Etapa 2.2.2

Diferencie usando a regra do produto, que determina que $\frac{d}{d x} [f (x) g (x)]$ é $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ , em que $f (x) = x \sec (x)$ e $g (x) = \tan (x)$ .

$4 (x \sec (x) \frac{d}{d x} [\tan (x)] + \tan (x) \frac{d}{d x} [x \sec (x)]) + \frac{d}{d x} [4 \sec (x)]$

Etapa 2.2.3

A derivada de $\tan (x)$ em relação a $x$ é $\sec^{2} (x)$ .

$4 (x \sec (x) \sec^{2} (x) + \tan (x) \frac{d}{d x} [x \sec (x)]) + \frac{d}{d x} [4 \sec (x)]$

Etapa 2.2.4

Diferencie usando a regra do produto, que determina que $\frac{d}{d x} [f (x) g (x)]$ é $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ , em que $f (x) = x$ e $g (x) = \sec (x)$ .

$4 (x \sec (x) \sec^{2} (x) + \tan (x) (x \frac{d}{d x} [\sec (x)] + \sec (x) \frac{d}{d x} [x])) + \frac{d}{d x} [4 \sec (x)]$

Etapa 2.2.5

A derivada de $\sec (x)$ em relação a $x$ é $\sec (x) \tan (x)$ .

$4 (x \sec (x) \sec^{2} (x) + \tan (x) (x (\sec (x) \tan (x)) + \sec (x) \frac{d}{d x} [x])) + \frac{d}{d x} [4 \sec (x)]$

Etapa 2.2.6

Diferencie usando a regra da multiplicação de potências, que determina que $\frac{d}{d x} [x^{n}]$ é $n x^{n - 1}$ , em que $n = 1$ .

$4 (x \sec (x) \sec^{2} (x) + \tan (x) (x (\sec (x) \tan (x)) + \sec (x) \cdot 1)) + \frac{d}{d x} [4 \sec (x)]$

Etapa 2.2.7

Multiplique $\sec (x)$ por $\sec^{2} (x)$ somando os expoentes.

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Etapa 2.2.7.1

Mova $\sec^{2} (x)$ .

$4 (x (\sec^{2} (x) \sec (x)) + \tan (x) (x (\sec (x) \tan (x)) + \sec (x) \cdot 1)) + \frac{d}{d x} [4 \sec (x)]$

Etapa 2.2.7.2

Multiplique $\sec^{2} (x)$ por $\sec (x)$ .

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Etapa 2.2.7.2.1

Eleve $\sec (x)$ à potência de $1$ .

$4 (x (\sec^{2} (x) \sec^{1} (x)) + \tan (x) (x (\sec (x) \tan (x)) + \sec (x) \cdot 1)) + \frac{d}{d x} [4 \sec (x)]$

Etapa 2.2.7.2.2

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$4 (x {\sec (x)}^{2 + 1} + \tan (x) (x (\sec (x) \tan (x)) + \sec (x) \cdot 1)) + \frac{d}{d x} [4 \sec (x)]$

Etapa 2.2.7.3

Some $2$ e $1$ .

$4 (x \sec^{3} (x) + \tan (x) (x (\sec (x) \tan (x)) + \sec (x) \cdot 1)) + \frac{d}{d x} [4 \sec (x)]$

Etapa 2.2.8

Multiplique $\sec (x)$ por $1$ .

$4 (x \sec^{3} (x) + \tan (x) (x (\sec (x) \tan (x)) + \sec (x))) + \frac{d}{d x} [4 \sec (x)]$

Etapa 2.3

Avalie $\frac{d}{d x} [4 \sec (x)]$ .

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Etapa 2.3.1

Como $4$ é constante em relação a $x$ , a derivada de $4 \sec (x)$ em relação a $x$ é $4 \frac{d}{d x} [\sec (x)]$ .

$4 (x \sec^{3} (x) + \tan (x) (x (\sec (x) \tan (x)) + \sec (x))) + 4 \frac{d}{d x} [\sec (x)]$

Etapa 2.3.2

A derivada de $\sec (x)$ em relação a $x$ é $\sec (x) \tan (x)$ .

$4 (x \sec^{3} (x) + \tan (x) (x (\sec (x) \tan (x)) + \sec (x))) + 4 \sec (x) \tan (x)$

Etapa 2.4

Simplifique.

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Etapa 2.4.1

Aplique a propriedade distributiva.

$4 (x \sec^{3} (x) + \tan (x) (x (\sec (x) \tan (x))) + \tan (x) \sec (x)) + 4 \sec (x) \tan (x)$

Etapa 2.4.2

Aplique a propriedade distributiva.

$4 (x \sec^{3} (x)) + 4 (\tan (x) (x (\sec (x) \tan (x)))) + 4 (\tan (x) \sec (x)) + 4 \sec (x) \tan (x)$

Etapa 2.4.3

Combine os termos.

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Etapa 2.4.3.1

Eleve $\tan (x)$ à potência de $1$ .

$4 x \sec^{3} (x) + 4 (x (\sec (x) (\tan^{1} (x) \tan (x)))) + 4 (\tan (x) \sec (x)) + 4 \sec (x) \tan (x)$

Etapa 2.4.3.2

Eleve $\tan (x)$ à potência de $1$ .

$4 x \sec^{3} (x) + 4 (x (\sec (x) (\tan^{1} (x) \tan^{1} (x)))) + 4 (\tan (x) \sec (x)) + 4 \sec (x) \tan (x)$

Etapa 2.4.3.3

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$4 x \sec^{3} (x) + 4 (x (\sec (x) {\tan (x)}^{1 + 1})) + 4 (\tan (x) \sec (x)) + 4 \sec (x) \tan (x)$

Etapa 2.4.3.4

Some $1$ e $1$ .

$4 x \sec^{3} (x) + 4 (x (\sec (x) \tan^{2} (x))) + 4 (\tan (x) \sec (x)) + 4 \sec (x) \tan (x)$

Etapa 2.4.3.5

Reordene os fatores de $4 \tan (x) \sec (x)$ .

$4 x \sec^{3} (x) + 4 x (\sec (x) \tan^{2} (x)) + 4 \sec (x) \tan (x) + 4 \sec (x) \tan (x)$

Etapa 2.4.3.6

Some $4 \sec (x) \tan (x)$ e $4 \sec (x) \tan (x)$ .

$4 x \sec^{3} (x) + 4 x (\sec (x) \tan^{2} (x)) + 8 \sec (x) \tan (x)$

Etapa 2.4.4

Reordene os termos.

$f'' (x) = 4 x \sec^{3} (x) + 4 x \tan^{2} (x) \sec (x) + 8 \sec (x) \tan (x)$

Etapa 3

Encontre a terceira derivada.

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Etapa 3.1

De acordo com a regra da soma, a derivada de $4 x \sec^{3} (x) + 4 x \tan^{2} (x) \sec (x) + 8 \sec (x) \tan (x)$ com relação a $x$ é $\frac{d}{d x} [4 x \sec^{3} (x)] + \frac{d}{d x} [4 x \tan^{2} (x) \sec (x)] + \frac{d}{d x} [8 \sec (x) \tan (x)]$ .

$\frac{d}{d x} [4 x \sec^{3} (x)] + \frac{d}{d x} [4 x \tan^{2} (x) \sec (x)] + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.2

Avalie $\frac{d}{d x} [4 x \sec^{3} (x)]$ .

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Etapa 3.2.1

Como $4$ é constante em relação a $x$ , a derivada de $4 x \sec^{3} (x)$ em relação a $x$ é $4 \frac{d}{d x} [x \sec^{3} (x)]$ .

$4 \frac{d}{d x} [x \sec^{3} (x)] + \frac{d}{d x} [4 x \tan^{2} (x) \sec (x)] + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.2.2

Diferencie usando a regra do produto, que determina que $\frac{d}{d x} [f (x) g (x)]$ é $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ , em que $f (x) = x$ e $g (x) = \sec^{3} (x)$ .

$4 (x \frac{d}{d x} [\sec^{3} (x)] + \sec^{3} (x) \frac{d}{d x} [x]) + \frac{d}{d x} [4 x \tan^{2} (x) \sec (x)] + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.2.3

Diferencie usando a regra da cadeia, que determina que $\frac{d}{d x} [f (g (x))]$ é $f' (g (x)) g' (x)$ , em que $f (x) = x^{3}$ e $g (x) = \sec (x)$ .

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Etapa 3.2.3.1

Para aplicar a regra da cadeia, defina $u_{1}$ como $\sec (x)$ .

$4 (x (\frac{d}{d u_{1}} [{u_{1}}^{3}] \frac{d}{d x} [\sec (x)]) + \sec^{3} (x) \frac{d}{d x} [x]) + \frac{d}{d x} [4 x \tan^{2} (x) \sec (x)] + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.2.3.2

Diferencie usando a regra da multiplicação de potências, que determina que $\frac{d}{d u_{1}} [{u_{1}}^{n}]$ é $n {u_{1}}^{n - 1}$ , em que $n = 3$ .

$4 (x (3 {u_{1}}^{2} \frac{d}{d x} [\sec (x)]) + \sec^{3} (x) \frac{d}{d x} [x]) + \frac{d}{d x} [4 x \tan^{2} (x) \sec (x)] + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.2.3.3

Substitua todas as ocorrências de $u_{1}$ por $\sec (x)$ .

$4 (x (3 \sec^{2} (x) \frac{d}{d x} [\sec (x)]) + \sec^{3} (x) \frac{d}{d x} [x]) + \frac{d}{d x} [4 x \tan^{2} (x) \sec (x)] + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.2.4

A derivada de $\sec (x)$ em relação a $x$ é $\sec (x) \tan (x)$ .

$4 (x (3 \sec^{2} (x) (\sec (x) \tan (x))) + \sec^{3} (x) \frac{d}{d x} [x]) + \frac{d}{d x} [4 x \tan^{2} (x) \sec (x)] + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.2.5

Diferencie usando a regra da multiplicação de potências, que determina que $\frac{d}{d x} [x^{n}]$ é $n x^{n - 1}$ , em que $n = 1$ .

$4 (x (3 \sec^{2} (x) (\sec (x) \tan (x))) + \sec^{3} (x) \cdot 1) + \frac{d}{d x} [4 x \tan^{2} (x) \sec (x)] + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.2.6

Eleve $\sec (x)$ à potência de $1$ .

$4 (x (3 (\sec^{1} (x) \sec^{2} (x)) \tan (x)) + \sec^{3} (x) \cdot 1) + \frac{d}{d x} [4 x \tan^{2} (x) \sec (x)] + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.2.7

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$4 (x (3 {\sec (x)}^{1 + 2} \tan (x)) + \sec^{3} (x) \cdot 1) + \frac{d}{d x} [4 x \tan^{2} (x) \sec (x)] + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.2.8

Some $1$ e $2$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x) \cdot 1) + \frac{d}{d x} [4 x \tan^{2} (x) \sec (x)] + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.2.9

Multiplique $\sec^{3} (x)$ por $1$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + \frac{d}{d x} [4 x \tan^{2} (x) \sec (x)] + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.3

Avalie $\frac{d}{d x} [4 x \tan^{2} (x) \sec (x)]$ .

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Etapa 3.3.1

Como $4$ é constante em relação a $x$ , a derivada de $4 x \tan^{2} (x) \sec (x)$ em relação a $x$ é $4 \frac{d}{d x} [x \tan^{2} (x) \sec (x)]$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 \frac{d}{d x} [x \tan^{2} (x) \sec (x)] + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.3.2

Diferencie usando a regra do produto, que determina que $\frac{d}{d x} [f (x) g (x)]$ é $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ , em que $f (x) = x \tan^{2} (x)$ e $g (x) = \sec (x)$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{2} (x) \frac{d}{d x} [\sec (x)] + \sec (x) \frac{d}{d x} [x \tan^{2} (x)]) + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.3.3

A derivada de $\sec (x)$ em relação a $x$ é $\sec (x) \tan (x)$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{2} (x) (\sec (x) \tan (x)) + \sec (x) \frac{d}{d x} [x \tan^{2} (x)]) + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.3.4

Diferencie usando a regra do produto, que determina que $\frac{d}{d x} [f (x) g (x)]$ é $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ , em que $f (x) = x$ e $g (x) = \tan^{2} (x)$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{2} (x) (\sec (x) \tan (x)) + \sec (x) (x \frac{d}{d x} [\tan^{2} (x)] + \tan^{2} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.3.5

Diferencie usando a regra da cadeia, que determina que $\frac{d}{d x} [f (g (x))]$ é $f' (g (x)) g' (x)$ , em que $f (x) = x^{2}$ e $g (x) = \tan (x)$ .

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Etapa 3.3.5.1

Para aplicar a regra da cadeia, defina $u_{2}$ como $\tan (x)$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{2} (x) (\sec (x) \tan (x)) + \sec (x) (x (\frac{d}{d u_{2}} [{u_{2}}^{2}] \frac{d}{d x} [\tan (x)]) + \tan^{2} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.3.5.2

Diferencie usando a regra da multiplicação de potências, que determina que $\frac{d}{d u_{2}} [{u_{2}}^{n}]$ é $n {u_{2}}^{n - 1}$ , em que $n = 2$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{2} (x) (\sec (x) \tan (x)) + \sec (x) (x (2 u_{2} \frac{d}{d x} [\tan (x)]) + \tan^{2} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.3.5.3

Substitua todas as ocorrências de $u_{2}$ por $\tan (x)$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{2} (x) (\sec (x) \tan (x)) + \sec (x) (x (2 \tan (x) \frac{d}{d x} [\tan (x)]) + \tan^{2} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.3.6

A derivada de $\tan (x)$ em relação a $x$ é $\sec^{2} (x)$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{2} (x) (\sec (x) \tan (x)) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.3.7

Diferencie usando a regra da multiplicação de potências, que determina que $\frac{d}{d x} [x^{n}]$ é $n x^{n - 1}$ , em que $n = 1$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{2} (x) (\sec (x) \tan (x)) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x) \cdot 1)) + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.3.8

Eleve $\tan (x)$ à potência de $1$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x (\tan^{1} (x) \tan^{2} (x)) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x) \cdot 1)) + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.3.9

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x {\tan (x)}^{1 + 2} \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x) \cdot 1)) + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.3.10

Some $1$ e $2$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x) \cdot 1)) + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.3.11

Multiplique $\tan^{2} (x)$ por $1$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x))) + \frac{d}{d x} [8 \sec (x) \tan (x)]$

Etapa 3.4

Avalie $\frac{d}{d x} [8 \sec (x) \tan (x)]$ .

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Etapa 3.4.1

Como $8$ é constante em relação a $x$ , a derivada de $8 \sec (x) \tan (x)$ em relação a $x$ é $8 \frac{d}{d x} [\sec (x) \tan (x)]$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x))) + 8 \frac{d}{d x} [\sec (x) \tan (x)]$

Etapa 3.4.2

Diferencie usando a regra do produto, que determina que $\frac{d}{d x} [f (x) g (x)]$ é $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ , em que $f (x) = \sec (x)$ e $g (x) = \tan (x)$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x))) + 8 (\sec (x) \frac{d}{d x} [\tan (x)] + \tan (x) \frac{d}{d x} [\sec (x)])$

Etapa 3.4.3

A derivada de $\tan (x)$ em relação a $x$ é $\sec^{2} (x)$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x))) + 8 (\sec (x) \sec^{2} (x) + \tan (x) \frac{d}{d x} [\sec (x)])$

Etapa 3.4.4

A derivada de $\sec (x)$ em relação a $x$ é $\sec (x) \tan (x)$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x))) + 8 (\sec (x) \sec^{2} (x) + \tan (x) (\sec (x) \tan (x)))$

Etapa 3.4.5

Multiplique $\sec (x)$ por $\sec^{2} (x)$ somando os expoentes.

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Etapa 3.4.5.1

Multiplique $\sec (x)$ por $\sec^{2} (x)$ .

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Etapa 3.4.5.1.1

Eleve $\sec (x)$ à potência de $1$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x))) + 8 (\sec^{1} (x) \sec^{2} (x) + \tan (x) (\sec (x) \tan (x)))$

Etapa 3.4.5.1.2

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x))) + 8 ({\sec (x)}^{1 + 2} + \tan (x) (\sec (x) \tan (x)))$

Etapa 3.4.5.2

Some $1$ e $2$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x))) + 8 (\sec^{3} (x) + \tan (x) (\sec (x) \tan (x)))$

Etapa 3.4.6

Eleve $\tan (x)$ à potência de $1$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x))) + 8 (\sec^{3} (x) + \tan^{1} (x) \tan (x) \sec (x))$

Etapa 3.4.7

Eleve $\tan (x)$ à potência de $1$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x))) + 8 (\sec^{3} (x) + \tan^{1} (x) \tan^{1} (x) \sec (x))$

Etapa 3.4.8

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x))) + 8 (\sec^{3} (x) + {\tan (x)}^{1 + 1} \sec (x))$

Etapa 3.4.9

Some $1$ e $1$ .

$4 (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x)) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x))) + 8 (\sec^{3} (x) + \tan^{2} (x) \sec (x))$

Etapa 3.5

Simplifique.

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Etapa 3.5.1

Aplique a propriedade distributiva.

$4 (x (3 \sec^{3} (x) \tan (x))) + 4 \sec^{3} (x) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x)) + \tan^{2} (x))) + 8 (\sec^{3} (x) + \tan^{2} (x) \sec (x))$

Etapa 3.5.2

Aplique a propriedade distributiva.

$4 (x (3 \sec^{3} (x) \tan (x))) + 4 \sec^{3} (x) + 4 (x \tan^{3} (x) \sec (x) + \sec (x) (x (2 \tan (x) \sec^{2} (x))) + \sec (x) \tan^{2} (x)) + 8 (\sec^{3} (x) + \tan^{2} (x) \sec (x))$

Etapa 3.5.3

Aplique a propriedade distributiva.

$4 (x (3 \sec^{3} (x) \tan (x))) + 4 \sec^{3} (x) + 4 (x \tan^{3} (x) \sec (x)) + 4 (\sec (x) (x (2 \tan (x) \sec^{2} (x)))) + 4 (\sec (x) \tan^{2} (x)) + 8 (\sec^{3} (x) + \tan^{2} (x) \sec (x))$

Etapa 3.5.4

Aplique a propriedade distributiva.

$4 (x (3 \sec^{3} (x) \tan (x))) + 4 \sec^{3} (x) + 4 (x \tan^{3} (x) \sec (x)) + 4 (\sec (x) (x (2 \tan (x) \sec^{2} (x)))) + 4 (\sec (x) \tan^{2} (x)) + 8 \sec^{3} (x) + 8 (\tan^{2} (x) \sec (x))$

Etapa 3.5.5

Combine os termos.

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Etapa 3.5.5.1

Multiplique $3$ por $4$ .

$12 (x (\sec^{3} (x) \tan (x))) + 4 \sec^{3} (x) + 4 (x \tan^{3} (x) \sec (x)) + 4 (\sec (x) (x (2 \tan (x) \sec^{2} (x)))) + 4 (\sec (x) \tan^{2} (x)) + 8 \sec^{3} (x) + 8 (\tan^{2} (x) \sec (x))$

Etapa 3.5.5.2

Eleve $\sec (x)$ à potência de $1$ .

$12 x (\sec^{3} (x) \tan (x)) + 4 \sec^{3} (x) + 4 x \tan^{3} (x) \sec (x) + 4 (x (2 \tan (x) (\sec^{1} (x) \sec^{2} (x)))) + 4 (\sec (x) \tan^{2} (x)) + 8 \sec^{3} (x) + 8 (\tan^{2} (x) \sec (x))$

Etapa 3.5.5.3

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$12 x (\sec^{3} (x) \tan (x)) + 4 \sec^{3} (x) + 4 x \tan^{3} (x) \sec (x) + 4 (x (2 \tan (x) {\sec (x)}^{1 + 2})) + 4 (\sec (x) \tan^{2} (x)) + 8 \sec^{3} (x) + 8 (\tan^{2} (x) \sec (x))$

Etapa 3.5.5.4

Some $1$ e $2$ .

$12 x (\sec^{3} (x) \tan (x)) + 4 \sec^{3} (x) + 4 x \tan^{3} (x) \sec (x) + 4 (x (2 \tan (x) \sec^{3} (x))) + 4 (\sec (x) \tan^{2} (x)) + 8 \sec^{3} (x) + 8 (\tan^{2} (x) \sec (x))$

Etapa 3.5.5.5

Multiplique $2$ por $4$ .

$12 x (\sec^{3} (x) \tan (x)) + 4 \sec^{3} (x) + 4 x \tan^{3} (x) \sec (x) + 8 (x (\tan (x) \sec^{3} (x))) + 4 (\sec (x) \tan^{2} (x)) + 8 \sec^{3} (x) + 8 (\tan^{2} (x) \sec (x))$

Etapa 3.5.5.6

Reordene os fatores de $8 x (\tan (x) \sec^{3} (x))$ .

$12 x (\sec^{3} (x) \tan (x)) + 4 \sec^{3} (x) + 4 x \tan^{3} (x) \sec (x) + 8 x \sec^{3} (x) \tan (x) + 4 \sec (x) \tan^{2} (x) + 8 \sec^{3} (x) + 8 (\tan^{2} (x) \sec (x))$

Etapa 3.5.5.7

Some $12 x \sec^{3} (x) \tan (x)$ e $8 x \sec^{3} (x) \tan (x)$ .

$20 x \sec^{3} (x) \tan (x) + 4 \sec^{3} (x) + 4 x \tan^{3} (x) \sec (x) + 4 \sec (x) \tan^{2} (x) + 8 \sec^{3} (x) + 8 (\tan^{2} (x) \sec (x))$

Etapa 3.5.5.8

Some $4 \sec^{3} (x)$ e $8 \sec^{3} (x)$ .

$20 x \sec^{3} (x) \tan (x) + 4 x \tan^{3} (x) \sec (x) + 4 \sec (x) \tan^{2} (x) + 12 \sec^{3} (x) + 8 \tan^{2} (x) \sec (x)$

Etapa 3.5.5.9

Reordene os fatores de $4 \sec (x) \tan^{2} (x)$ .

$20 x \sec^{3} (x) \tan (x) + 4 x \tan^{3} (x) \sec (x) + 4 \tan^{2} (x) \sec (x) + 12 \sec^{3} (x) + 8 \tan^{2} (x) \sec (x)$

Etapa 3.5.5.10

Some $4 \tan^{2} (x) \sec (x)$ e $8 \tan^{2} (x) \sec (x)$ .

$f''' (x) = 20 x \sec^{3} (x) \tan (x) + 4 x \tan^{3} (x) \sec (x) + 12 \tan^{2} (x) \sec (x) + 12 \sec^{3} (x)$

Etapa 4

Encontre a quarta derivada.

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Etapa 4.1

De acordo com a regra da soma, a derivada de $20 x \sec^{3} (x) \tan (x) + 4 x \tan^{3} (x) \sec (x) + 12 \tan^{2} (x) \sec (x) + 12 \sec^{3} (x)$ com relação a $x$ é $\frac{d}{d x} [20 x \sec^{3} (x) \tan (x)] + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$ .

$\frac{d}{d x} [20 x \sec^{3} (x) \tan (x)] + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2

Avalie $\frac{d}{d x} [20 x \sec^{3} (x) \tan (x)]$ .

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Etapa 4.2.1

Como $20$ é constante em relação a $x$ , a derivada de $20 x \sec^{3} (x) \tan (x)$ em relação a $x$ é $20 \frac{d}{d x} [x \sec^{3} (x) \tan (x)]$ .

$20 \frac{d}{d x} [x \sec^{3} (x) \tan (x)] + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.2

Diferencie usando a regra do produto, que determina que $\frac{d}{d x} [f (x) g (x)]$ é $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ , em que $f (x) = x \sec^{3} (x)$ e $g (x) = \tan (x)$ .

$20 (x \sec^{3} (x) \frac{d}{d x} [\tan (x)] + \tan (x) \frac{d}{d x} [x \sec^{3} (x)]) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.3

A derivada de $\tan (x)$ em relação a $x$ é $\sec^{2} (x)$ .

$20 (x \sec^{3} (x) \sec^{2} (x) + \tan (x) \frac{d}{d x} [x \sec^{3} (x)]) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.4

Diferencie usando a regra do produto, que determina que $\frac{d}{d x} [f (x) g (x)]$ é $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ , em que $f (x) = x$ e $g (x) = \sec^{3} (x)$ .

$20 (x \sec^{3} (x) \sec^{2} (x) + \tan (x) (x \frac{d}{d x} [\sec^{3} (x)] + \sec^{3} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.5

Diferencie usando a regra da cadeia, que determina que $\frac{d}{d x} [f (g (x))]$ é $f' (g (x)) g' (x)$ , em que $f (x) = x^{3}$ e $g (x) = \sec (x)$ .

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Etapa 4.2.5.1

Para aplicar a regra da cadeia, defina $u_{1}$ como $\sec (x)$ .

$20 (x \sec^{3} (x) \sec^{2} (x) + \tan (x) (x (\frac{d}{d u_{1}} [{u_{1}}^{3}] \frac{d}{d x} [\sec (x)]) + \sec^{3} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.5.2

Diferencie usando a regra da multiplicação de potências, que determina que $\frac{d}{d u_{1}} [{u_{1}}^{n}]$ é $n {u_{1}}^{n - 1}$ , em que $n = 3$ .

$20 (x \sec^{3} (x) \sec^{2} (x) + \tan (x) (x (3 {u_{1}}^{2} \frac{d}{d x} [\sec (x)]) + \sec^{3} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.5.3

Substitua todas as ocorrências de $u_{1}$ por $\sec (x)$ .

$20 (x \sec^{3} (x) \sec^{2} (x) + \tan (x) (x (3 \sec^{2} (x) \frac{d}{d x} [\sec (x)]) + \sec^{3} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.6

A derivada de $\sec (x)$ em relação a $x$ é $\sec (x) \tan (x)$ .

$20 (x \sec^{3} (x) \sec^{2} (x) + \tan (x) (x (3 \sec^{2} (x) (\sec (x) \tan (x))) + \sec^{3} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.7

Diferencie usando a regra da multiplicação de potências, que determina que $\frac{d}{d x} [x^{n}]$ é $n x^{n - 1}$ , em que $n = 1$ .

$20 (x \sec^{3} (x) \sec^{2} (x) + \tan (x) (x (3 \sec^{2} (x) (\sec (x) \tan (x))) + \sec^{3} (x) \cdot 1)) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.8

Multiplique $\sec^{3} (x)$ por $\sec^{2} (x)$ somando os expoentes.

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Etapa 4.2.8.1

Mova $\sec^{2} (x)$ .

$20 (x (\sec^{2} (x) \sec^{3} (x)) + \tan (x) (x (3 \sec^{2} (x) (\sec (x) \tan (x))) + \sec^{3} (x) \cdot 1)) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.8.2

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$20 (x {\sec (x)}^{2 + 3} + \tan (x) (x (3 \sec^{2} (x) (\sec (x) \tan (x))) + \sec^{3} (x) \cdot 1)) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.8.3

Some $2$ e $3$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{2} (x) (\sec (x) \tan (x))) + \sec^{3} (x) \cdot 1)) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.9

Eleve $\sec (x)$ à potência de $1$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 (\sec^{1} (x) \sec^{2} (x)) \tan (x)) + \sec^{3} (x) \cdot 1)) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.10

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$20 (x \sec^{5} (x) + \tan (x) (x (3 {\sec (x)}^{1 + 2} \tan (x)) + \sec^{3} (x) \cdot 1)) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.11

Some $1$ e $2$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x) \cdot 1)) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.2.12

Multiplique $\sec^{3} (x)$ por $1$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + \frac{d}{d x} [4 x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.3

Avalie $\frac{d}{d x} [4 x \tan^{3} (x) \sec (x)]$ .

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Etapa 4.3.1

Como $4$ é constante em relação a $x$ , a derivada de $4 x \tan^{3} (x) \sec (x)$ em relação a $x$ é $4 \frac{d}{d x} [x \tan^{3} (x) \sec (x)]$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 \frac{d}{d x} [x \tan^{3} (x) \sec (x)] + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.3.2

Diferencie usando a regra do produto, que determina que $\frac{d}{d x} [f (x) g (x)]$ é $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ , em que $f (x) = x \tan^{3} (x)$ e $g (x) = \sec (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{3} (x) \frac{d}{d x} [\sec (x)] + \sec (x) \frac{d}{d x} [x \tan^{3} (x)]) + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.3.3

A derivada de $\sec (x)$ em relação a $x$ é $\sec (x) \tan (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{3} (x) (\sec (x) \tan (x)) + \sec (x) \frac{d}{d x} [x \tan^{3} (x)]) + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.3.4

Diferencie usando a regra do produto, que determina que $\frac{d}{d x} [f (x) g (x)]$ é $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ , em que $f (x) = x$ e $g (x) = \tan^{3} (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{3} (x) (\sec (x) \tan (x)) + \sec (x) (x \frac{d}{d x} [\tan^{3} (x)] + \tan^{3} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.3.5

Diferencie usando a regra da cadeia, que determina que $\frac{d}{d x} [f (g (x))]$ é $f' (g (x)) g' (x)$ , em que $f (x) = x^{3}$ e $g (x) = \tan (x)$ .

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Etapa 4.3.5.1

Para aplicar a regra da cadeia, defina $u_{2}$ como $\tan (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{3} (x) (\sec (x) \tan (x)) + \sec (x) (x (\frac{d}{d u_{2}} [{u_{2}}^{3}] \frac{d}{d x} [\tan (x)]) + \tan^{3} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.3.5.2

Diferencie usando a regra da multiplicação de potências, que determina que $\frac{d}{d u_{2}} [{u_{2}}^{n}]$ é $n {u_{2}}^{n - 1}$ , em que $n = 3$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{3} (x) (\sec (x) \tan (x)) + \sec (x) (x (3 {u_{2}}^{2} \frac{d}{d x} [\tan (x)]) + \tan^{3} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.3.5.3

Substitua todas as ocorrências de $u_{2}$ por $\tan (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{3} (x) (\sec (x) \tan (x)) + \sec (x) (x (3 \tan^{2} (x) \frac{d}{d x} [\tan (x)]) + \tan^{3} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.3.6

A derivada de $\tan (x)$ em relação a $x$ é $\sec^{2} (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{3} (x) (\sec (x) \tan (x)) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x) \frac{d}{d x} [x])) + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.3.7

Diferencie usando a regra da multiplicação de potências, que determina que $\frac{d}{d x} [x^{n}]$ é $n x^{n - 1}$ , em que $n = 1$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{3} (x) (\sec (x) \tan (x)) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x) \cdot 1)) + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.3.8

Eleve $\tan (x)$ à potência de $1$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x (\tan^{1} (x) \tan^{3} (x)) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x) \cdot 1)) + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.3.9

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x {\tan (x)}^{1 + 3} \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x) \cdot 1)) + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.3.10

Some $1$ e $3$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x) \cdot 1)) + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.3.11

Multiplique $\tan^{3} (x)$ por $1$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + \frac{d}{d x} [12 \tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.4

Avalie $\frac{d}{d x} [12 \tan^{2} (x) \sec (x)]$ .

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Etapa 4.4.1

Como $12$ é constante em relação a $x$ , a derivada de $12 \tan^{2} (x) \sec (x)$ em relação a $x$ é $12 \frac{d}{d x} [\tan^{2} (x) \sec (x)]$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 \frac{d}{d x} [\tan^{2} (x) \sec (x)] + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.4.2

Diferencie usando a regra do produto, que determina que $\frac{d}{d x} [f (x) g (x)]$ é $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ , em que $f (x) = \tan^{2} (x)$ e $g (x) = \sec (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{2} (x) \frac{d}{d x} [\sec (x)] + \sec (x) \frac{d}{d x} [\tan^{2} (x)]) + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.4.3

A derivada de $\sec (x)$ em relação a $x$ é $\sec (x) \tan (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{2} (x) (\sec (x) \tan (x)) + \sec (x) \frac{d}{d x} [\tan^{2} (x)]) + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.4.4

Diferencie usando a regra da cadeia, que determina que $\frac{d}{d x} [f (g (x))]$ é $f' (g (x)) g' (x)$ , em que $f (x) = x^{2}$ e $g (x) = \tan (x)$ .

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Etapa 4.4.4.1

Para aplicar a regra da cadeia, defina $u_{3}$ como $\tan (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{2} (x) (\sec (x) \tan (x)) + \sec (x) (\frac{d}{d u_{3}} [{u_{3}}^{2}] \frac{d}{d x} [\tan (x)])) + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.4.4.2

Diferencie usando a regra da multiplicação de potências, que determina que $\frac{d}{d u_{3}} [{u_{3}}^{n}]$ é $n {u_{3}}^{n - 1}$ , em que $n = 2$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{2} (x) (\sec (x) \tan (x)) + \sec (x) (2 u_{3} \frac{d}{d x} [\tan (x)])) + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.4.4.3

Substitua todas as ocorrências de $u_{3}$ por $\tan (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{2} (x) (\sec (x) \tan (x)) + \sec (x) (2 \tan (x) \frac{d}{d x} [\tan (x)])) + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.4.5

A derivada de $\tan (x)$ em relação a $x$ é $\sec^{2} (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{2} (x) (\sec (x) \tan (x)) + \sec (x) (2 \tan (x) \sec^{2} (x))) + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.4.6

Multiplique $\tan^{2} (x)$ por $\tan (x)$ somando os expoentes.

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Etapa 4.4.6.1

Mova $\tan (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan (x) \tan^{2} (x) \sec (x) + \sec (x) (2 \tan (x) \sec^{2} (x))) + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.4.6.2

Multiplique $\tan (x)$ por $\tan^{2} (x)$ .

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Etapa 4.4.6.2.1

Eleve $\tan (x)$ à potência de $1$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{1} (x) \tan^{2} (x) \sec (x) + \sec (x) (2 \tan (x) \sec^{2} (x))) + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.4.6.2.2

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 ({\tan (x)}^{1 + 2} \sec (x) + \sec (x) (2 \tan (x) \sec^{2} (x))) + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.4.6.3

Some $1$ e $2$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + \sec (x) (2 \tan (x) \sec^{2} (x))) + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.4.7

Eleve $\sec (x)$ à potência de $1$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) (\sec^{1} (x) \sec^{2} (x))) + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.4.8

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) {\sec (x)}^{1 + 2}) + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.4.9

Some $1$ e $2$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) \sec^{3} (x)) + \frac{d}{d x} [12 \sec^{3} (x)]$

Etapa 4.5

Avalie $\frac{d}{d x} [12 \sec^{3} (x)]$ .

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Etapa 4.5.1

Como $12$ é constante em relação a $x$ , a derivada de $12 \sec^{3} (x)$ em relação a $x$ é $12 \frac{d}{d x} [\sec^{3} (x)]$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) \sec^{3} (x)) + 12 \frac{d}{d x} [\sec^{3} (x)]$

Etapa 4.5.2

Diferencie usando a regra da cadeia, que determina que $\frac{d}{d x} [f (g (x))]$ é $f' (g (x)) g' (x)$ , em que $f (x) = x^{3}$ e $g (x) = \sec (x)$ .

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Etapa 4.5.2.1

Para aplicar a regra da cadeia, defina $u_{4}$ como $\sec (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) \sec^{3} (x)) + 12 (\frac{d}{d u_{4}} [{u_{4}}^{3}] \frac{d}{d x} [\sec (x)])$

Etapa 4.5.2.2

Diferencie usando a regra da multiplicação de potências, que determina que $\frac{d}{d u_{4}} [{u_{4}}^{n}]$ é $n {u_{4}}^{n - 1}$ , em que $n = 3$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) \sec^{3} (x)) + 12 (3 {u_{4}}^{2} \frac{d}{d x} [\sec (x)])$

Etapa 4.5.2.3

Substitua todas as ocorrências de $u_{4}$ por $\sec (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) \sec^{3} (x)) + 12 (3 \sec^{2} (x) \frac{d}{d x} [\sec (x)])$

Etapa 4.5.3

A derivada de $\sec (x)$ em relação a $x$ é $\sec (x) \tan (x)$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) \sec^{3} (x)) + 12 (3 \sec^{2} (x) (\sec (x) \tan (x)))$

Etapa 4.5.4

Eleve $\sec (x)$ à potência de $1$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) \sec^{3} (x)) + 12 (3 (\sec^{1} (x) \sec^{2} (x)) \tan (x))$

Etapa 4.5.5

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) \sec^{3} (x)) + 12 (3 {\sec (x)}^{1 + 2} \tan (x))$

Etapa 4.5.6

Some $1$ e $2$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) \sec^{3} (x)) + 12 (3 \sec^{3} (x) \tan (x))$

Etapa 4.5.7

Multiplique $3$ por $12$ .

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x)) + \sec^{3} (x))) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6

Simplifique.

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Etapa 4.6.1

Aplique a propriedade distributiva.

$20 (x \sec^{5} (x) + \tan (x) (x (3 \sec^{3} (x) \tan (x))) + \tan (x) \sec^{3} (x)) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.2

Aplique a propriedade distributiva.

$20 (x \sec^{5} (x)) + 20 (\tan (x) (x (3 \sec^{3} (x) \tan (x)))) + 20 (\tan (x) \sec^{3} (x)) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)) + \tan^{3} (x))) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.3

Aplique a propriedade distributiva.

$20 (x \sec^{5} (x)) + 20 (\tan (x) (x (3 \sec^{3} (x) \tan (x)))) + 20 (\tan (x) \sec^{3} (x)) + 4 (x \tan^{4} (x) \sec (x) + \sec (x) (x (3 \tan^{2} (x) \sec^{2} (x))) + \sec (x) \tan^{3} (x)) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.4

Aplique a propriedade distributiva.

$20 (x \sec^{5} (x)) + 20 (\tan (x) (x (3 \sec^{3} (x) \tan (x)))) + 20 (\tan (x) \sec^{3} (x)) + 4 (x \tan^{4} (x) \sec (x)) + 4 (\sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)))) + 4 (\sec (x) \tan^{3} (x)) + 12 (\tan^{3} (x) \sec (x) + 2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.5

Aplique a propriedade distributiva.

$20 (x \sec^{5} (x)) + 20 (\tan (x) (x (3 \sec^{3} (x) \tan (x)))) + 20 (\tan (x) \sec^{3} (x)) + 4 (x \tan^{4} (x) \sec (x)) + 4 (\sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)))) + 4 (\sec (x) \tan^{3} (x)) + 12 (\tan^{3} (x) \sec (x)) + 12 (2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6

Combine os termos.

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Etapa 4.6.6.1

Eleve $\tan (x)$ à potência de $1$ .

$20 x \sec^{5} (x) + 20 (x (3 \sec^{3} (x) (\tan^{1} (x) \tan (x)))) + 20 (\tan (x) \sec^{3} (x)) + 4 (x \tan^{4} (x) \sec (x)) + 4 (\sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)))) + 4 (\sec (x) \tan^{3} (x)) + 12 (\tan^{3} (x) \sec (x)) + 12 (2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.2

Eleve $\tan (x)$ à potência de $1$ .

$20 x \sec^{5} (x) + 20 (x (3 \sec^{3} (x) (\tan^{1} (x) \tan^{1} (x)))) + 20 (\tan (x) \sec^{3} (x)) + 4 (x \tan^{4} (x) \sec (x)) + 4 (\sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)))) + 4 (\sec (x) \tan^{3} (x)) + 12 (\tan^{3} (x) \sec (x)) + 12 (2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.3

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$20 x \sec^{5} (x) + 20 (x (3 \sec^{3} (x) {\tan (x)}^{1 + 1})) + 20 (\tan (x) \sec^{3} (x)) + 4 (x \tan^{4} (x) \sec (x)) + 4 (\sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)))) + 4 (\sec (x) \tan^{3} (x)) + 12 (\tan^{3} (x) \sec (x)) + 12 (2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.4

Some $1$ e $1$ .

$20 x \sec^{5} (x) + 20 (x (3 \sec^{3} (x) \tan^{2} (x))) + 20 (\tan (x) \sec^{3} (x)) + 4 (x \tan^{4} (x) \sec (x)) + 4 (\sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)))) + 4 (\sec (x) \tan^{3} (x)) + 12 (\tan^{3} (x) \sec (x)) + 12 (2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.5

Multiplique $3$ por $20$ .

$20 x \sec^{5} (x) + 60 (x (\sec^{3} (x) \tan^{2} (x))) + 20 (\tan (x) \sec^{3} (x)) + 4 (x \tan^{4} (x) \sec (x)) + 4 (\sec (x) (x (3 \tan^{2} (x) \sec^{2} (x)))) + 4 (\sec (x) \tan^{3} (x)) + 12 (\tan^{3} (x) \sec (x)) + 12 (2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.6

Eleve $\sec (x)$ à potência de $1$ .

$20 x \sec^{5} (x) + 60 x (\sec^{3} (x) \tan^{2} (x)) + 20 \tan (x) \sec^{3} (x) + 4 x \tan^{4} (x) \sec (x) + 4 (x (3 \tan^{2} (x) (\sec^{1} (x) \sec^{2} (x)))) + 4 (\sec (x) \tan^{3} (x)) + 12 (\tan^{3} (x) \sec (x)) + 12 (2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.7

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$20 x \sec^{5} (x) + 60 x (\sec^{3} (x) \tan^{2} (x)) + 20 \tan (x) \sec^{3} (x) + 4 x \tan^{4} (x) \sec (x) + 4 (x (3 \tan^{2} (x) {\sec (x)}^{1 + 2})) + 4 (\sec (x) \tan^{3} (x)) + 12 (\tan^{3} (x) \sec (x)) + 12 (2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.8

Some $1$ e $2$ .

$20 x \sec^{5} (x) + 60 x (\sec^{3} (x) \tan^{2} (x)) + 20 \tan (x) \sec^{3} (x) + 4 x \tan^{4} (x) \sec (x) + 4 (x (3 \tan^{2} (x) \sec^{3} (x))) + 4 (\sec (x) \tan^{3} (x)) + 12 (\tan^{3} (x) \sec (x)) + 12 (2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.9

Multiplique $3$ por $4$ .

$20 x \sec^{5} (x) + 60 x (\sec^{3} (x) \tan^{2} (x)) + 20 \tan (x) \sec^{3} (x) + 4 x \tan^{4} (x) \sec (x) + 12 (x (\tan^{2} (x) \sec^{3} (x))) + 4 (\sec (x) \tan^{3} (x)) + 12 (\tan^{3} (x) \sec (x)) + 12 (2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.10

Reordene os fatores de $12 x (\tan^{2} (x) \sec^{3} (x))$ .

$20 x \sec^{5} (x) + 60 x (\sec^{3} (x) \tan^{2} (x)) + 20 \tan (x) \sec^{3} (x) + 4 x \tan^{4} (x) \sec (x) + 12 x \sec^{3} (x) \tan^{2} (x) + 4 \sec (x) \tan^{3} (x) + 12 (\tan^{3} (x) \sec (x)) + 12 (2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.11

Some $60 x \sec^{3} (x) \tan^{2} (x)$ e $12 x \sec^{3} (x) \tan^{2} (x)$ .

$20 x \sec^{5} (x) + 72 x \sec^{3} (x) \tan^{2} (x) + 20 \tan (x) \sec^{3} (x) + 4 x \tan^{4} (x) \sec (x) + 4 \sec (x) \tan^{3} (x) + 12 (\tan^{3} (x) \sec (x)) + 12 (2 \tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.12

Multiplique $2$ por $12$ .

$20 x \sec^{5} (x) + 72 x \sec^{3} (x) \tan^{2} (x) + 20 \tan (x) \sec^{3} (x) + 4 x \tan^{4} (x) \sec (x) + 4 \sec (x) \tan^{3} (x) + 12 \tan^{3} (x) \sec (x) + 24 (\tan (x) \sec^{3} (x)) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.13

Reordene os fatores de $4 \sec (x) \tan^{3} (x)$ .

$20 x \sec^{5} (x) + 72 x \sec^{3} (x) \tan^{2} (x) + 20 \tan (x) \sec^{3} (x) + 4 x \tan^{4} (x) \sec (x) + 4 \tan^{3} (x) \sec (x) + 12 \tan^{3} (x) \sec (x) + 24 \tan (x) \sec^{3} (x) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.14

Some $4 \tan^{3} (x) \sec (x)$ e $12 \tan^{3} (x) \sec (x)$ .

$20 x \sec^{5} (x) + 72 x \sec^{3} (x) \tan^{2} (x) + 20 \tan (x) \sec^{3} (x) + 4 x \tan^{4} (x) \sec (x) + 16 \tan^{3} (x) \sec (x) + 24 \tan (x) \sec^{3} (x) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.15

Some $20 \tan (x) \sec^{3} (x)$ e $24 \tan (x) \sec^{3} (x)$ .

$20 x \sec^{5} (x) + 72 x \sec^{3} (x) \tan^{2} (x) + 44 \tan (x) \sec^{3} (x) + 4 x \tan^{4} (x) \sec (x) + 16 \tan^{3} (x) \sec (x) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.16

Reordene os fatores de $44 \tan (x) \sec^{3} (x)$ .

$20 x \sec^{5} (x) + 72 x \sec^{3} (x) \tan^{2} (x) + 44 \sec^{3} (x) \tan (x) + 4 x \tan^{4} (x) \sec (x) + 16 \tan^{3} (x) \sec (x) + 36 \sec^{3} (x) \tan (x)$

Etapa 4.6.6.17

Some $44 \sec^{3} (x) \tan (x)$ e $36 \sec^{3} (x) \tan (x)$ .

$f^{4} (x) = 20 x \sec^{5} (x) + 72 x \sec^{3} (x) \tan^{2} (x) + 80 \sec^{3} (x) \tan (x) + 4 x \tan^{4} (x) \sec (x) + 16 \tan^{3} (x) \sec (x)$