Calculus Examples

$g (t) = {(\frac{1}{2} t^{2} - 3)}^{5}$

Step 1

Find the first derivative.

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Step 1.1

Differentiate using the chain rule, which states that $\frac{d}{d t} [f (g (t))]$ is $f' (g (t)) g' (t)$ where $f (t) = t^{5}$ and $g (t) = \frac{1}{2} t^{2} - 3$ .

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Step 1.1.1

To apply the Chain Rule, set $u$ as $\frac{1}{2} t^{2} - 3$ .

$\frac{d}{d u} [u^{5}] \frac{d}{d t} [\frac{1}{2} t^{2} - 3]$

Step 1.1.2

Differentiate using the Power Rule which states that $\frac{d}{d u} [u^{n}]$ is $n u^{n - 1}$ where $n = 5$ .

$5 u^{4} \frac{d}{d t} [\frac{1}{2} t^{2} - 3]$

Step 1.1.3

Replace all occurrences of $u$ with $\frac{1}{2} t^{2} - 3$ .

$5 {(\frac{1}{2} t^{2} - 3)}^{4} \frac{d}{d t} [\frac{1}{2} t^{2} - 3]$

Step 1.2

Differentiate.

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Step 1.2.1

Combine $\frac{1}{2}$ and $t^{2}$ .

$5 {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [\frac{1}{2} t^{2} - 3]$

Step 1.2.2

Combine $\frac{1}{2}$ and $t^{2}$ .

$5 {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [\frac{t^{2}}{2} - 3]$

Step 1.2.3

By the Sum Rule, the derivative of $\frac{t^{2}}{2} - 3$ with respect to $t$ is $\frac{d}{d t} [\frac{t^{2}}{2}] + \frac{d}{d t} [- 3]$ .

$5 {(\frac{t^{2}}{2} - 3)}^{4} (\frac{d}{d t} [\frac{t^{2}}{2}] + \frac{d}{d t} [- 3])$

Step 1.2.4

Since $\frac{1}{2}$ is constant with respect to $t$ , the derivative of $\frac{t^{2}}{2}$ with respect to $t$ is $\frac{1}{2} \frac{d}{d t} [t^{2}]$ .

$5 {(\frac{t^{2}}{2} - 3)}^{4} (\frac{1}{2} \frac{d}{d t} [t^{2}] + \frac{d}{d t} [- 3])$

Step 1.2.5

Differentiate using the Power Rule which states that $\frac{d}{d t} [t^{n}]$ is $n t^{n - 1}$ where $n = 2$ .

$5 {(\frac{t^{2}}{2} - 3)}^{4} (\frac{1}{2} (2 t) + \frac{d}{d t} [- 3])$

Step 1.2.6

Simplify terms.

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Step 1.2.6.1

Combine $2$ and $\frac{1}{2}$ .

$5 {(\frac{t^{2}}{2} - 3)}^{4} (\frac{2}{2} t + \frac{d}{d t} [- 3])$

Step 1.2.6.2

Combine $\frac{2}{2}$ and $t$ .

$5 {(\frac{t^{2}}{2} - 3)}^{4} (\frac{2 t}{2} + \frac{d}{d t} [- 3])$

Step 1.2.6.3

Cancel the common factor of $2$ .

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Step 1.2.6.3.1

Cancel the common factor.

$5 {(\frac{t^{2}}{2} - 3)}^{4} (\frac{2 t}{2} + \frac{d}{d t} [- 3])$

Step 1.2.6.3.2

Divide $t$ by $1$ .

$5 {(\frac{t^{2}}{2} - 3)}^{4} (t + \frac{d}{d t} [- 3])$

Step 1.2.7

Since $- 3$ is constant with respect to $t$ , the derivative of $- 3$ with respect to $t$ is $0$ .

$5 {(\frac{t^{2}}{2} - 3)}^{4} (t + 0)$

Step 1.2.8

Simplify the expression.

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Step 1.2.8.1

Add $t$ and $0$ .

$5 {(\frac{t^{2}}{2} - 3)}^{4} t$

Step 1.2.8.2

Reorder the factors of $5 {(\frac{t^{2}}{2} - 3)}^{4} t$ .

$f' (t) = 5 t {(\frac{t^{2}}{2} - 3)}^{4}$

Step 2

Find the second derivative.

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Step 2.1

Since $5$ is constant with respect to $t$ , the derivative of $5 t {(\frac{t^{2}}{2} - 3)}^{4}$ with respect to $t$ is $5 \frac{d}{d t} [t {(\frac{t^{2}}{2} - 3)}^{4}]$ .

$5 \frac{d}{d t} [t {(\frac{t^{2}}{2} - 3)}^{4}]$

Step 2.2

Differentiate using the Product Rule which states that $\frac{d}{d t} [f (t) g (t)]$ is $f (t) \frac{d}{d t} [g (t)] + g (t) \frac{d}{d t} [f (t)]$ where $f (t) = t$ and $g (t) = {(\frac{t^{2}}{2} - 3)}^{4}$ .

$5 (t \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{4}] + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.3

Differentiate using the chain rule, which states that $\frac{d}{d t} [f (g (t))]$ is $f' (g (t)) g' (t)$ where $f (t) = t^{4}$ and $g (t) = \frac{t^{2}}{2} - 3$ .

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Step 2.3.1

To apply the Chain Rule, set $u$ as $\frac{t^{2}}{2} - 3$ .

$5 (t (\frac{d}{d u} [u^{4}] \frac{d}{d t} [\frac{t^{2}}{2} - 3]) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.3.2

Differentiate using the Power Rule which states that $\frac{d}{d u} [u^{n}]$ is $n u^{n - 1}$ where $n = 4$ .

$5 (t (4 u^{3} \frac{d}{d t} [\frac{t^{2}}{2} - 3]) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.3.3

Replace all occurrences of $u$ with $\frac{t^{2}}{2} - 3$ .

$5 (t (4 {(\frac{t^{2}}{2} - 3)}^{3} \frac{d}{d t} [\frac{t^{2}}{2} - 3]) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.4

Differentiate.

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Step 2.4.1

By the Sum Rule, the derivative of $\frac{t^{2}}{2} - 3$ with respect to $t$ is $\frac{d}{d t} [\frac{t^{2}}{2}] + \frac{d}{d t} [- 3]$ .

$5 (t (4 {(\frac{t^{2}}{2} - 3)}^{3} (\frac{d}{d t} [\frac{t^{2}}{2}] + \frac{d}{d t} [- 3])) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.4.2

Since $\frac{1}{2}$ is constant with respect to $t$ , the derivative of $\frac{t^{2}}{2}$ with respect to $t$ is $\frac{1}{2} \frac{d}{d t} [t^{2}]$ .

$5 (t (4 {(\frac{t^{2}}{2} - 3)}^{3} (\frac{1}{2} \frac{d}{d t} [t^{2}] + \frac{d}{d t} [- 3])) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.4.3

Differentiate using the Power Rule which states that $\frac{d}{d t} [t^{n}]$ is $n t^{n - 1}$ where $n = 2$ .

$5 (t (4 {(\frac{t^{2}}{2} - 3)}^{3} (\frac{1}{2} (2 t) + \frac{d}{d t} [- 3])) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.4.4

Simplify terms.

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Step 2.4.4.1

Combine $2$ and $\frac{1}{2}$ .

$5 (t (4 {(\frac{t^{2}}{2} - 3)}^{3} (\frac{2}{2} t + \frac{d}{d t} [- 3])) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.4.4.2

Combine $\frac{2}{2}$ and $t$ .

$5 (t (4 {(\frac{t^{2}}{2} - 3)}^{3} (\frac{2 t}{2} + \frac{d}{d t} [- 3])) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.4.4.3

Cancel the common factor of $2$ .

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Step 2.4.4.3.1

Cancel the common factor.

$5 (t (4 {(\frac{t^{2}}{2} - 3)}^{3} (\frac{2 t}{2} + \frac{d}{d t} [- 3])) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.4.4.3.2

Divide $t$ by $1$ .

$5 (t (4 {(\frac{t^{2}}{2} - 3)}^{3} (t + \frac{d}{d t} [- 3])) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.4.5

Since $- 3$ is constant with respect to $t$ , the derivative of $- 3$ with respect to $t$ is $0$ .

$5 (t (4 {(\frac{t^{2}}{2} - 3)}^{3} (t + 0)) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.4.6

Add $t$ and $0$ .

$5 (t (4 {(\frac{t^{2}}{2} - 3)}^{3} t) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.5

Raise $t$ to the power of $1$ .

$5 (t^{1} t (4 {(\frac{t^{2}}{2} - 3)}^{3}) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.6

Raise $t$ to the power of $1$ .

$5 (t^{1} t^{1} (4 {(\frac{t^{2}}{2} - 3)}^{3}) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.7

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$5 (t^{1 + 1} (4 {(\frac{t^{2}}{2} - 3)}^{3}) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.8

Add $1$ and $1$ .

$5 (t^{2} (4 {(\frac{t^{2}}{2} - 3)}^{3}) + {(\frac{t^{2}}{2} - 3)}^{4} \frac{d}{d t} [t])$

Step 2.9

Differentiate using the Power Rule which states that $\frac{d}{d t} [t^{n}]$ is $n t^{n - 1}$ where $n = 1$ .

$5 (t^{2} (4 {(\frac{t^{2}}{2} - 3)}^{3}) + {(\frac{t^{2}}{2} - 3)}^{4} \cdot 1)$

Step 2.10

Multiply ${(\frac{t^{2}}{2} - 3)}^{4}$ by $1$ .

$5 (t^{2} (4 {(\frac{t^{2}}{2} - 3)}^{3}) + {(\frac{t^{2}}{2} - 3)}^{4})$

Step 2.11

Simplify.

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Step 2.11.1

Apply the distributive property.

$5 (t^{2} (4 {(\frac{t^{2}}{2} - 3)}^{3})) + 5 {(\frac{t^{2}}{2} - 3)}^{4}$

Step 2.11.2

Multiply $4$ by $5$ .

$20 (t^{2} ({(\frac{t^{2}}{2} - 3)}^{3})) + 5 {(\frac{t^{2}}{2} - 3)}^{4}$

Step 2.11.3

Factor $5 {(\frac{t^{2}}{2} - 3)}^{3}$ out of $20 t^{2} {(\frac{t^{2}}{2} - 3)}^{3} + 5 {(\frac{t^{2}}{2} - 3)}^{4}$ .

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Step 2.11.3.1

Factor $5 {(\frac{t^{2}}{2} - 3)}^{3}$ out of $20 t^{2} {(\frac{t^{2}}{2} - 3)}^{3}$ .

$5 {(\frac{t^{2}}{2} - 3)}^{3} (4 t^{2}) + 5 {(\frac{t^{2}}{2} - 3)}^{4}$

Step 2.11.3.2

Factor $5 {(\frac{t^{2}}{2} - 3)}^{3}$ out of $5 {(\frac{t^{2}}{2} - 3)}^{4}$ .

$5 {(\frac{t^{2}}{2} - 3)}^{3} (4 t^{2}) + 5 {(\frac{t^{2}}{2} - 3)}^{3} (\frac{t^{2}}{2} - 3)$

Step 2.11.3.3

Factor $5 {(\frac{t^{2}}{2} - 3)}^{3}$ out of $5 {(\frac{t^{2}}{2} - 3)}^{3} (4 t^{2}) + 5 {(\frac{t^{2}}{2} - 3)}^{3} (\frac{t^{2}}{2} - 3)$ .

$5 {(\frac{t^{2}}{2} - 3)}^{3} (4 t^{2} + \frac{t^{2}}{2} - 3)$

Step 2.11.4

Combine terms.

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Step 2.11.4.1

To write $4 t^{2}$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$5 {(\frac{t^{2}}{2} - 3)}^{3} (4 t^{2} \cdot \frac{2}{2} + \frac{t^{2}}{2} - 3)$

Step 2.11.4.2

Combine $4 t^{2}$ and $\frac{2}{2}$ .

$5 {(\frac{t^{2}}{2} - 3)}^{3} (\frac{4 t^{2} \cdot 2}{2} + \frac{t^{2}}{2} - 3)$

Step 2.11.4.3

Combine the numerators over the common denominator.

$5 {(\frac{t^{2}}{2} - 3)}^{3} (\frac{4 t^{2} \cdot 2 + t^{2}}{2} - 3)$

Step 2.11.4.4

Multiply $2$ by $4$ .

$5 {(\frac{t^{2}}{2} - 3)}^{3} (\frac{8 t^{2} + t^{2}}{2} - 3)$

Step 2.11.4.5

Add $8 t^{2}$ and $t^{2}$ .

$f'' (t) = 5 {(\frac{t^{2}}{2} - 3)}^{3} (\frac{9 t^{2}}{2} - 3)$

Step 3

Find the third derivative.

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Step 3.1

Since $5$ is constant with respect to $t$ , the derivative of $5 {(\frac{t^{2}}{2} - 3)}^{3} (\frac{9 t^{2}}{2} - 3)$ with respect to $t$ is $5 \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3} (\frac{9 t^{2}}{2} - 3)]$ .

$5 \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3} (\frac{9 t^{2}}{2} - 3)]$

Step 3.2

Differentiate using the Product Rule which states that $\frac{d}{d t} [f (t) g (t)]$ is $f (t) \frac{d}{d t} [g (t)] + g (t) \frac{d}{d t} [f (t)]$ where $f (t) = {(\frac{t^{2}}{2} - 3)}^{3}$ and $g (t) = \frac{9 t^{2}}{2} - 3$ .

$5 ({(\frac{t^{2}}{2} - 3)}^{3} \frac{d}{d t} [\frac{9 t^{2}}{2} - 3] + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.3

Differentiate.

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Step 3.3.1

By the Sum Rule, the derivative of $\frac{9 t^{2}}{2} - 3$ with respect to $t$ is $\frac{d}{d t} [\frac{9 t^{2}}{2}] + \frac{d}{d t} [- 3]$ .

$5 ({(\frac{t^{2}}{2} - 3)}^{3} (\frac{d}{d t} [\frac{9 t^{2}}{2}] + \frac{d}{d t} [- 3]) + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.3.2

Since $\frac{9}{2}$ is constant with respect to $t$ , the derivative of $\frac{9 t^{2}}{2}$ with respect to $t$ is $\frac{9}{2} \frac{d}{d t} [t^{2}]$ .

$5 ({(\frac{t^{2}}{2} - 3)}^{3} (\frac{9}{2} \frac{d}{d t} [t^{2}] + \frac{d}{d t} [- 3]) + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.3.3

Differentiate using the Power Rule which states that $\frac{d}{d t} [t^{n}]$ is $n t^{n - 1}$ where $n = 2$ .

$5 ({(\frac{t^{2}}{2} - 3)}^{3} (\frac{9}{2} (2 t) + \frac{d}{d t} [- 3]) + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.3.4

Simplify terms.

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Step 3.3.4.1

Combine $2$ and $\frac{9}{2}$ .

$5 ({(\frac{t^{2}}{2} - 3)}^{3} (\frac{2 \cdot 9}{2} t + \frac{d}{d t} [- 3]) + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.3.4.2

Multiply $2$ by $9$ .

$5 ({(\frac{t^{2}}{2} - 3)}^{3} (\frac{18}{2} t + \frac{d}{d t} [- 3]) + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.3.4.3

Combine $\frac{18}{2}$ and $t$ .

$5 ({(\frac{t^{2}}{2} - 3)}^{3} (\frac{18 t}{2} + \frac{d}{d t} [- 3]) + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.3.4.4

Cancel the common factor of $18$ and $2$ .

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Step 3.3.4.4.1

Factor $2$ out of $18 t$ .

$5 ({(\frac{t^{2}}{2} - 3)}^{3} (\frac{2 (9 t)}{2} + \frac{d}{d t} [- 3]) + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.3.4.4.2

Cancel the common factors.

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Step 3.3.4.4.2.1

Factor $2$ out of $2$ .

$5 ({(\frac{t^{2}}{2} - 3)}^{3} (\frac{2 (9 t)}{2 (1)} + \frac{d}{d t} [- 3]) + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.3.4.4.2.2

Cancel the common factor.

$5 ({(\frac{t^{2}}{2} - 3)}^{3} (\frac{2 (9 t)}{2 \cdot 1} + \frac{d}{d t} [- 3]) + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.3.4.4.2.3

Rewrite the expression.

$5 ({(\frac{t^{2}}{2} - 3)}^{3} (\frac{9 t}{1} + \frac{d}{d t} [- 3]) + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.3.4.4.2.4

Divide $9 t$ by $1$ .

$5 ({(\frac{t^{2}}{2} - 3)}^{3} (9 t + \frac{d}{d t} [- 3]) + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.3.5

Since $- 3$ is constant with respect to $t$ , the derivative of $- 3$ with respect to $t$ is $0$ .

$5 ({(\frac{t^{2}}{2} - 3)}^{3} (9 t + 0) + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.3.6

Simplify the expression.

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Step 3.3.6.1

Add $9 t$ and $0$ .

$5 ({(\frac{t^{2}}{2} - 3)}^{3} (9 t) + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.3.6.2

Move $9$ to the left of ${(\frac{t^{2}}{2} - 3)}^{3}$ .

$5 (9 \cdot {(\frac{t^{2}}{2} - 3)}^{3} t + (\frac{9 t^{2}}{2} - 3) \frac{d}{d t} [{(\frac{t^{2}}{2} - 3)}^{3}])$

Step 3.4

Differentiate using the chain rule, which states that $\frac{d}{d t} [f (g (t))]$ is $f' (g (t)) g' (t)$ where $f (t) = t^{3}$ and $g (t) = \frac{t^{2}}{2} - 3$ .

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Step 3.4.1

To apply the Chain Rule, set $u$ as $\frac{t^{2}}{2} - 3$ .

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t + (\frac{9 t^{2}}{2} - 3) (\frac{d}{d u} [u^{3}] \frac{d}{d t} [\frac{t^{2}}{2} - 3]))$

Step 3.4.2

Differentiate using the Power Rule which states that $\frac{d}{d u} [u^{n}]$ is $n u^{n - 1}$ where $n = 3$ .

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t + (\frac{9 t^{2}}{2} - 3) (3 u^{2} \frac{d}{d t} [\frac{t^{2}}{2} - 3]))$

Step 3.4.3

Replace all occurrences of $u$ with $\frac{t^{2}}{2} - 3$ .

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t + (\frac{9 t^{2}}{2} - 3) (3 {(\frac{t^{2}}{2} - 3)}^{2} \frac{d}{d t} [\frac{t^{2}}{2} - 3]))$

Step 3.5

Differentiate.

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Step 3.5.1

Move $3$ to the left of $\frac{9 t^{2}}{2} - 3$ .

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t + 3 \cdot (\frac{9 t^{2}}{2} - 3) {(\frac{t^{2}}{2} - 3)}^{2} \frac{d}{d t} [\frac{t^{2}}{2} - 3])$

Step 3.5.2

By the Sum Rule, the derivative of $\frac{t^{2}}{2} - 3$ with respect to $t$ is $\frac{d}{d t} [\frac{t^{2}}{2}] + \frac{d}{d t} [- 3]$ .

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t + 3 (\frac{9 t^{2}}{2} - 3) {(\frac{t^{2}}{2} - 3)}^{2} (\frac{d}{d t} [\frac{t^{2}}{2}] + \frac{d}{d t} [- 3]))$

Step 3.5.3

Since $\frac{1}{2}$ is constant with respect to $t$ , the derivative of $\frac{t^{2}}{2}$ with respect to $t$ is $\frac{1}{2} \frac{d}{d t} [t^{2}]$ .

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t + 3 (\frac{9 t^{2}}{2} - 3) {(\frac{t^{2}}{2} - 3)}^{2} (\frac{1}{2} \frac{d}{d t} [t^{2}] + \frac{d}{d t} [- 3]))$

Step 3.5.4

Differentiate using the Power Rule which states that $\frac{d}{d t} [t^{n}]$ is $n t^{n - 1}$ where $n = 2$ .

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t + 3 (\frac{9 t^{2}}{2} - 3) {(\frac{t^{2}}{2} - 3)}^{2} (\frac{1}{2} (2 t) + \frac{d}{d t} [- 3]))$

Step 3.5.5

Simplify terms.

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Step 3.5.5.1

Combine $2$ and $\frac{1}{2}$ .

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t + 3 (\frac{9 t^{2}}{2} - 3) {(\frac{t^{2}}{2} - 3)}^{2} (\frac{2}{2} t + \frac{d}{d t} [- 3]))$

Step 3.5.5.2

Combine $\frac{2}{2}$ and $t$ .

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t + 3 (\frac{9 t^{2}}{2} - 3) {(\frac{t^{2}}{2} - 3)}^{2} (\frac{2 t}{2} + \frac{d}{d t} [- 3]))$

Step 3.5.5.3

Cancel the common factor of $2$ .

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Step 3.5.5.3.1

Cancel the common factor.

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t + 3 (\frac{9 t^{2}}{2} - 3) {(\frac{t^{2}}{2} - 3)}^{2} (\frac{2 t}{2} + \frac{d}{d t} [- 3]))$

Step 3.5.5.3.2

Divide $t$ by $1$ .

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t + 3 (\frac{9 t^{2}}{2} - 3) {(\frac{t^{2}}{2} - 3)}^{2} (t + \frac{d}{d t} [- 3]))$

Step 3.5.6

Since $- 3$ is constant with respect to $t$ , the derivative of $- 3$ with respect to $t$ is $0$ .

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t + 3 (\frac{9 t^{2}}{2} - 3) {(\frac{t^{2}}{2} - 3)}^{2} (t + 0))$

Step 3.5.7

Add $t$ and $0$ .

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t + 3 (\frac{9 t^{2}}{2} - 3) {(\frac{t^{2}}{2} - 3)}^{2} t)$

Step 3.6

Simplify.

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Step 3.6.1

Apply the distributive property.

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t + (3 \frac{9 t^{2}}{2} + 3 \cdot - 3) {(\frac{t^{2}}{2} - 3)}^{2} t)$

Step 3.6.2

Apply the distributive property.

$5 (9 {(\frac{t^{2}}{2} - 3)}^{3} t) + 5 ((3 \frac{9 t^{2}}{2} + 3 \cdot - 3) {(\frac{t^{2}}{2} - 3)}^{2} t)$

Step 3.6.3

Multiply $9$ by $5$ .

$45 ({(\frac{t^{2}}{2} - 3)}^{3} t) + 5 ((3 \frac{9 t^{2}}{2} + 3 \cdot - 3) {(\frac{t^{2}}{2} - 3)}^{2} t)$

Step 3.6.4

Combine $3$ and $\frac{9 t^{2}}{2}$ .

$45 {(\frac{t^{2}}{2} - 3)}^{3} t + 5 ((\frac{3 (9 t^{2})}{2} + 3 \cdot - 3) {(\frac{t^{2}}{2} - 3)}^{2} t)$

Step 3.6.5

Multiply $9$ by $3$ .

$45 {(\frac{t^{2}}{2} - 3)}^{3} t + 5 ((\frac{27 t^{2}}{2} + 3 \cdot - 3) {(\frac{t^{2}}{2} - 3)}^{2} t)$

Step 3.6.6

Multiply $3$ by $- 3$ .

$45 {(\frac{t^{2}}{2} - 3)}^{3} t + 5 ((\frac{27 t^{2}}{2} - 9) {(\frac{t^{2}}{2} - 3)}^{2} t)$

Step 3.6.7

Factor $5 {(\frac{t^{2}}{2} - 3)}^{2} t$ out of $45 {(\frac{t^{2}}{2} - 3)}^{3} t + 5 (\frac{27 t^{2}}{2} - 9) {(\frac{t^{2}}{2} - 3)}^{2} t$ .

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Step 3.6.7.1

Reorder the expression.

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Step 3.6.7.1.1

Move ${(\frac{t^{2}}{2} - 3)}^{3}$ .

$45 t {(\frac{t^{2}}{2} - 3)}^{3} + 5 (\frac{27 t^{2}}{2} - 9) {(\frac{t^{2}}{2} - 3)}^{2} t$

Step 3.6.7.1.2

Move ${(\frac{t^{2}}{2} - 3)}^{2}$ .

$45 t {(\frac{t^{2}}{2} - 3)}^{3} + 5 (\frac{27 t^{2}}{2} - 9) t {(\frac{t^{2}}{2} - 3)}^{2}$

Step 3.6.7.1.3

Move $\frac{27 t^{2}}{2} - 9$ .

$45 t {(\frac{t^{2}}{2} - 3)}^{3} + 5 t (\frac{27 t^{2}}{2} - 9) {(\frac{t^{2}}{2} - 3)}^{2}$

Step 3.6.7.2

Factor $5 {(\frac{t^{2}}{2} - 3)}^{2} t$ out of $45 t {(\frac{t^{2}}{2} - 3)}^{3}$ .

$5 {(\frac{t^{2}}{2} - 3)}^{2} t (9 (\frac{t^{2}}{2} - 3)) + 5 t (\frac{27 t^{2}}{2} - 9) {(\frac{t^{2}}{2} - 3)}^{2}$

Step 3.6.7.3

Factor $5 {(\frac{t^{2}}{2} - 3)}^{2} t$ out of $5 t (\frac{27 t^{2}}{2} - 9) {(\frac{t^{2}}{2} - 3)}^{2}$ .

$5 {(\frac{t^{2}}{2} - 3)}^{2} t (9 (\frac{t^{2}}{2} - 3)) + 5 {(\frac{t^{2}}{2} - 3)}^{2} t (\frac{27 t^{2}}{2} - 9)$

Step 3.6.7.4

Factor $5 {(\frac{t^{2}}{2} - 3)}^{2} t$ out of $5 {(\frac{t^{2}}{2} - 3)}^{2} t (9 (\frac{t^{2}}{2} - 3)) + 5 {(\frac{t^{2}}{2} - 3)}^{2} t (\frac{27 t^{2}}{2} - 9)$ .

$5 {(\frac{t^{2}}{2} - 3)}^{2} t (9 (\frac{t^{2}}{2} - 3) + \frac{27 t^{2}}{2} - 9)$

Step 3.6.8

Combine terms.

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Step 3.6.8.1

To write $9 (\frac{t^{2}}{2} - 3)$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$5 {(\frac{t^{2}}{2} - 3)}^{2} t (9 (\frac{t^{2}}{2} - 3) \cdot \frac{2}{2} + \frac{27 t^{2}}{2} - 9)$

Step 3.6.8.2

Combine $9 (\frac{t^{2}}{2} - 3)$ and $\frac{2}{2}$ .

$5 {(\frac{t^{2}}{2} - 3)}^{2} t (\frac{9 (\frac{t^{2}}{2} - 3) \cdot 2}{2} + \frac{27 t^{2}}{2} - 9)$

Step 3.6.8.3

Combine the numerators over the common denominator.

$5 {(\frac{t^{2}}{2} - 3)}^{2} t (\frac{9 (\frac{t^{2}}{2} - 3) \cdot 2 + 27 t^{2}}{2} - 9)$

Step 3.6.8.4

Multiply $2$ by $9$ .

$5 {(\frac{t^{2}}{2} - 3)}^{2} t (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.9

Reorder the factors of $5 {(\frac{t^{2}}{2} - 3)}^{2} t (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$ .

$5 t {(\frac{t^{2}}{2} - 3)}^{2} (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.10

Rewrite ${(\frac{t^{2}}{2} - 3)}^{2}$ as $(\frac{t^{2}}{2} - 3) (\frac{t^{2}}{2} - 3)$ .

$5 t ((\frac{t^{2}}{2} - 3) (\frac{t^{2}}{2} - 3)) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.11

Expand $(\frac{t^{2}}{2} - 3) (\frac{t^{2}}{2} - 3)$ using the FOIL Method.

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Step 3.6.11.1

Apply the distributive property.

$5 t (\frac{t^{2}}{2} (\frac{t^{2}}{2} - 3) - 3 (\frac{t^{2}}{2} - 3)) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.11.2

Apply the distributive property.

$5 t (\frac{t^{2}}{2} \cdot \frac{t^{2}}{2} + \frac{t^{2}}{2} \cdot - 3 - 3 (\frac{t^{2}}{2} - 3)) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.11.3

Apply the distributive property.

$5 t (\frac{t^{2}}{2} \cdot \frac{t^{2}}{2} + \frac{t^{2}}{2} \cdot - 3 - 3 \frac{t^{2}}{2} - 3 \cdot - 3) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.12

Simplify and combine like terms.

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Step 3.6.12.1

Simplify each term.

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Step 3.6.12.1.1

Combine.

$5 t (\frac{t^{2} t^{2}}{2 \cdot 2} + \frac{t^{2}}{2} \cdot - 3 - 3 \frac{t^{2}}{2} - 3 \cdot - 3) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.12.1.2

Multiply $t^{2}$ by $t^{2}$ by adding the exponents.

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Step 3.6.12.1.2.1

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$5 t (\frac{t^{2 + 2}}{2 \cdot 2} + \frac{t^{2}}{2} \cdot - 3 - 3 \frac{t^{2}}{2} - 3 \cdot - 3) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.12.1.2.2

Add $2$ and $2$ .

$5 t (\frac{t^{4}}{2 \cdot 2} + \frac{t^{2}}{2} \cdot - 3 - 3 \frac{t^{2}}{2} - 3 \cdot - 3) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.12.1.3

Multiply $2$ by $2$ .

$5 t (\frac{t^{4}}{4} + \frac{t^{2}}{2} \cdot - 3 - 3 \frac{t^{2}}{2} - 3 \cdot - 3) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.12.1.4

Combine $\frac{t^{2}}{2}$ and $- 3$ .

$5 t (\frac{t^{4}}{4} + \frac{t^{2} \cdot - 3}{2} - 3 \frac{t^{2}}{2} - 3 \cdot - 3) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.12.1.5

Move $- 3$ to the left of $t^{2}$ .

$5 t (\frac{t^{4}}{4} + \frac{- 3 \cdot t^{2}}{2} - 3 \frac{t^{2}}{2} - 3 \cdot - 3) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.12.1.6

Move the negative in front of the fraction.

$5 t (\frac{t^{4}}{4} - \frac{3 \cdot t^{2}}{2} - 3 \frac{t^{2}}{2} - 3 \cdot - 3) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.12.1.7

Combine $- 3$ and $\frac{t^{2}}{2}$ .

$5 t (\frac{t^{4}}{4} - \frac{3 t^{2}}{2} + \frac{- 3 t^{2}}{2} - 3 \cdot - 3) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.12.1.8

Move the negative in front of the fraction.

$5 t (\frac{t^{4}}{4} - \frac{3 t^{2}}{2} - \frac{3 t^{2}}{2} - 3 \cdot - 3) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.12.1.9

Multiply $- 3$ by $- 3$ .

$5 t (\frac{t^{4}}{4} - \frac{3 t^{2}}{2} - \frac{3 t^{2}}{2} + 9) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.12.2

Subtract $\frac{3 t^{2}}{2}$ from $- \frac{3 t^{2}}{2}$ .

$5 t (\frac{t^{4}}{4} - 2 \frac{3 t^{2}}{2} + 9) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.13

Simplify each term.

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Step 3.6.13.1

Cancel the common factor of $2$ .

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Step 3.6.13.1.1

Factor $2$ out of $- 2$ .

$5 t (\frac{t^{4}}{4} + 2 (- 1) \frac{3 t^{2}}{2} + 9) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.13.1.2

Cancel the common factor.

$5 t (\frac{t^{4}}{4} + 2 \cdot - 1 \frac{3 t^{2}}{2} + 9) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.13.1.3

Rewrite the expression.

$5 t (\frac{t^{4}}{4} - 1 (3 t^{2}) + 9) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.13.2

Multiply $3$ by $- 1$ .

$5 t (\frac{t^{4}}{4} - 3 t^{2} + 9) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.14

Apply the distributive property.

$(5 t \frac{t^{4}}{4} + 5 t (- 3 t^{2}) + 5 t \cdot 9) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.15

Simplify.

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Step 3.6.15.1

Multiply $5 t \frac{t^{4}}{4}$ .

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Step 3.6.15.1.1

Combine $5$ and $\frac{t^{4}}{4}$ .

$(t \frac{5 t^{4}}{4} + 5 t (- 3 t^{2}) + 5 t \cdot 9) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.15.1.2

Combine $t$ and $\frac{5 t^{4}}{4}$ .

$(\frac{t (5 t^{4})}{4} + 5 t (- 3 t^{2}) + 5 t \cdot 9) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.15.1.3

Raise $t$ to the power of $1$ .

$(\frac{5 (t^{1} t^{4})}{4} + 5 t (- 3 t^{2}) + 5 t \cdot 9) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.15.1.4

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$(\frac{5 t^{1 + 4}}{4} + 5 t (- 3 t^{2}) + 5 t \cdot 9) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.15.1.5

Add $1$ and $4$ .

$(\frac{5 t^{5}}{4} + 5 t (- 3 t^{2}) + 5 t \cdot 9) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.15.2

Rewrite using the commutative property of multiplication.

$(\frac{5 t^{5}}{4} + 5 \cdot - 3 t \cdot t^{2} + 5 t \cdot 9) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.15.3

Multiply $9$ by $5$ .

$(\frac{5 t^{5}}{4} + 5 \cdot - 3 t \cdot t^{2} + 45 t) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.16

Simplify each term.

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Step 3.6.16.1

Multiply $t$ by $t^{2}$ by adding the exponents.

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Step 3.6.16.1.1

Move $t^{2}$ .

$(\frac{5 t^{5}}{4} + 5 \cdot - 3 (t^{2} t) + 45 t) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.16.1.2

Multiply $t^{2}$ by $t$ .

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Step 3.6.16.1.2.1

Raise $t$ to the power of $1$ .

$(\frac{5 t^{5}}{4} + 5 \cdot - 3 (t^{2} t^{1}) + 45 t) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.16.1.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$(\frac{5 t^{5}}{4} + 5 \cdot - 3 t^{2 + 1} + 45 t) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.16.1.3

Add $2$ and $1$ .

$(\frac{5 t^{5}}{4} + 5 \cdot - 3 t^{3} + 45 t) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.16.2

Multiply $5$ by $- 3$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{18 (\frac{t^{2}}{2} - 3) + 27 t^{2}}{2} - 9)$

Step 3.6.17

Simplify each term.

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Step 3.6.17.1

Simplify the numerator.

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Step 3.6.17.1.1

Factor $9$ out of $18 (\frac{t^{2}}{2} - 3) + 27 t^{2}$ .

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Step 3.6.17.1.1.1

Factor $9$ out of $18 (\frac{t^{2}}{2} - 3)$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{9 (2 (\frac{t^{2}}{2} - 3)) + 27 t^{2}}{2} - 9)$

Step 3.6.17.1.1.2

Factor $9$ out of $27 t^{2}$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{9 (2 (\frac{t^{2}}{2} - 3)) + 9 (3 t^{2})}{2} - 9)$

Step 3.6.17.1.1.3

Factor $9$ out of $9 (2 (\frac{t^{2}}{2} - 3)) + 9 (3 t^{2})$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{9 (2 (\frac{t^{2}}{2} - 3) + 3 t^{2})}{2} - 9)$

Step 3.6.17.1.2

Apply the distributive property.

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{9 (2 \frac{t^{2}}{2} + 2 \cdot - 3 + 3 t^{2})}{2} - 9)$

Step 3.6.17.1.3

Cancel the common factor of $2$ .

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Step 3.6.17.1.3.1

Cancel the common factor.

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{9 (2 \frac{t^{2}}{2} + 2 \cdot - 3 + 3 t^{2})}{2} - 9)$

Step 3.6.17.1.3.2

Rewrite the expression.

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{9 (t^{2} + 2 \cdot - 3 + 3 t^{2})}{2} - 9)$

Step 3.6.17.1.4

Multiply $2$ by $- 3$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{9 (t^{2} - 6 + 3 t^{2})}{2} - 9)$

Step 3.6.17.1.5

Add $t^{2}$ and $3 t^{2}$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{9 (4 t^{2} - 6)}{2} - 9)$

Step 3.6.17.1.6

Factor $2$ out of $4 t^{2} - 6$ .

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Step 3.6.17.1.6.1

Factor $2$ out of $4 t^{2}$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{9 (2 (2 t^{2}) - 6)}{2} - 9)$

Step 3.6.17.1.6.2

Factor $2$ out of $- 6$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{9 (2 (2 t^{2}) + 2 (- 3))}{2} - 9)$

Step 3.6.17.1.6.3

Factor $2$ out of $2 (2 t^{2}) + 2 (- 3)$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{9 (2 (2 t^{2} - 3))}{2} - 9)$

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{9 \cdot 2 (2 t^{2} - 3)}{2} - 9)$

Step 3.6.17.1.7

Multiply $9$ by $2$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{18 (2 t^{2} - 3)}{2} - 9)$

Step 3.6.17.2

Cancel the common factor of $18$ and $2$ .

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Step 3.6.17.2.1

Factor $2$ out of $18 (2 t^{2} - 3)$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{2 (9 (2 t^{2} - 3))}{2} - 9)$

Step 3.6.17.2.2

Cancel the common factors.

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Step 3.6.17.2.2.1

Factor $2$ out of $2$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{2 (9 (2 t^{2} - 3))}{2 (1)} - 9)$

Step 3.6.17.2.2.2

Cancel the common factor.

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{2 (9 (2 t^{2} - 3))}{2 \cdot 1} - 9)$

Step 3.6.17.2.2.3

Rewrite the expression.

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (\frac{9 (2 t^{2} - 3)}{1} - 9)$

Step 3.6.17.2.2.4

Divide $9 (2 t^{2} - 3)$ by $1$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (9 (2 t^{2} - 3) - 9)$

Step 3.6.17.3

Apply the distributive property.

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (9 (2 t^{2}) + 9 \cdot - 3 - 9)$

Step 3.6.17.4

Multiply $2$ by $9$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (18 t^{2} + 9 \cdot - 3 - 9)$

Step 3.6.17.5

Multiply $9$ by $- 3$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (18 t^{2} - 27 - 9)$

Step 3.6.18

Subtract $9$ from $- 27$ .

$(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (18 t^{2} - 36)$

Step 3.6.19

Expand $(\frac{5 t^{5}}{4} - 15 t^{3} + 45 t) (18 t^{2} - 36)$ by multiplying each term in the first expression by each term in the second expression.

$\frac{5 t^{5}}{4} (18 t^{2}) + \frac{5 t^{5}}{4} \cdot - 36 - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20

Simplify each term.

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Step 3.6.20.1

Rewrite using the commutative property of multiplication.

$18 \frac{5 t^{5}}{4} t^{2} + \frac{5 t^{5}}{4} \cdot - 36 - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.2

Cancel the common factor of $2$ .

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Step 3.6.20.2.1

Factor $2$ out of $18$ .

$2 (9) \frac{5 t^{5}}{4} t^{2} + \frac{5 t^{5}}{4} \cdot - 36 - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.2.2

Factor $2$ out of $4$ .

$2 \cdot 9 \frac{5 t^{5}}{2 \cdot 2} t^{2} + \frac{5 t^{5}}{4} \cdot - 36 - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.2.3

Cancel the common factor.

$2 \cdot 9 \frac{5 t^{5}}{2 \cdot 2} t^{2} + \frac{5 t^{5}}{4} \cdot - 36 - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.2.4

Rewrite the expression.

$9 \frac{5 t^{5}}{2} t^{2} + \frac{5 t^{5}}{4} \cdot - 36 - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.3

Combine $9$ and $\frac{5 t^{5}}{2}$ .

$\frac{9 (5 t^{5})}{2} t^{2} + \frac{5 t^{5}}{4} \cdot - 36 - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.4

Multiply $5$ by $9$ .

$\frac{45 t^{5}}{2} t^{2} + \frac{5 t^{5}}{4} \cdot - 36 - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.5

Multiply $\frac{45 t^{5}}{2} t^{2}$ .

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Step 3.6.20.5.1

Combine $\frac{45 t^{5}}{2}$ and $t^{2}$ .

$\frac{45 t^{5} t^{2}}{2} + \frac{5 t^{5}}{4} \cdot - 36 - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.5.2

Multiply $t^{5}$ by $t^{2}$ by adding the exponents.

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Step 3.6.20.5.2.1

Move $t^{2}$ .

$\frac{45 (t^{2} t^{5})}{2} + \frac{5 t^{5}}{4} \cdot - 36 - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.5.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{45 t^{2 + 5}}{2} + \frac{5 t^{5}}{4} \cdot - 36 - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.5.2.3

Add $2$ and $5$ .

$\frac{45 t^{7}}{2} + \frac{5 t^{5}}{4} \cdot - 36 - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.6

Cancel the common factor of $4$ .

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Step 3.6.20.6.1

Factor $4$ out of $- 36$ .

$\frac{45 t^{7}}{2} + \frac{5 t^{5}}{4} \cdot (4 (- 9)) - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.6.2

Cancel the common factor.

$\frac{45 t^{7}}{2} + \frac{5 t^{5}}{4} \cdot (4 \cdot - 9) - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.6.3

Rewrite the expression.

$\frac{45 t^{7}}{2} + 5 t^{5} \cdot - 9 - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.7

Multiply $- 9$ by $5$ .

$\frac{45 t^{7}}{2} - 45 t^{5} - 15 t^{3} (18 t^{2}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.8

Rewrite using the commutative property of multiplication.

$\frac{45 t^{7}}{2} - 45 t^{5} - 15 \cdot 18 t^{3} t^{2} - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.9

Multiply $t^{3}$ by $t^{2}$ by adding the exponents.

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Step 3.6.20.9.1

Move $t^{2}$ .

$\frac{45 t^{7}}{2} - 45 t^{5} - 15 \cdot 18 (t^{2} t^{3}) - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.9.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{45 t^{7}}{2} - 45 t^{5} - 15 \cdot 18 t^{2 + 3} - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.9.3

Add $2$ and $3$ .

$\frac{45 t^{7}}{2} - 45 t^{5} - 15 \cdot 18 t^{5} - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.10

Multiply $- 15$ by $18$ .

$\frac{45 t^{7}}{2} - 45 t^{5} - 270 t^{5} - 15 t^{3} \cdot - 36 + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.11

Multiply $- 36$ by $- 15$ .

$\frac{45 t^{7}}{2} - 45 t^{5} - 270 t^{5} + 540 t^{3} + 45 t (18 t^{2}) + 45 t \cdot - 36$

Step 3.6.20.12

Rewrite using the commutative property of multiplication.

$\frac{45 t^{7}}{2} - 45 t^{5} - 270 t^{5} + 540 t^{3} + 45 \cdot 18 t \cdot t^{2} + 45 t \cdot - 36$

Step 3.6.20.13

Multiply $t$ by $t^{2}$ by adding the exponents.

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Step 3.6.20.13.1

Move $t^{2}$ .

$\frac{45 t^{7}}{2} - 45 t^{5} - 270 t^{5} + 540 t^{3} + 45 \cdot 18 (t^{2} t) + 45 t \cdot - 36$

Step 3.6.20.13.2

Multiply $t^{2}$ by $t$ .

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Step 3.6.20.13.2.1

Raise $t$ to the power of $1$ .

$\frac{45 t^{7}}{2} - 45 t^{5} - 270 t^{5} + 540 t^{3} + 45 \cdot 18 (t^{2} t^{1}) + 45 t \cdot - 36$

Step 3.6.20.13.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{45 t^{7}}{2} - 45 t^{5} - 270 t^{5} + 540 t^{3} + 45 \cdot 18 t^{2 + 1} + 45 t \cdot - 36$

Step 3.6.20.13.3

Add $2$ and $1$ .

$\frac{45 t^{7}}{2} - 45 t^{5} - 270 t^{5} + 540 t^{3} + 45 \cdot 18 t^{3} + 45 t \cdot - 36$

Step 3.6.20.14

Multiply $45$ by $18$ .

$\frac{45 t^{7}}{2} - 45 t^{5} - 270 t^{5} + 540 t^{3} + 810 t^{3} + 45 t \cdot - 36$

Step 3.6.20.15

Multiply $- 36$ by $45$ .

$\frac{45 t^{7}}{2} - 45 t^{5} - 270 t^{5} + 540 t^{3} + 810 t^{3} - 1620 t$

Step 3.6.21

Subtract $270 t^{5}$ from $- 45 t^{5}$ .

$\frac{45 t^{7}}{2} - 315 t^{5} + 540 t^{3} + 810 t^{3} - 1620 t$

Step 3.6.22

Add $540 t^{3}$ and $810 t^{3}$ .

$f''' (t) = \frac{45 t^{7}}{2} - 315 t^{5} + 1350 t^{3} - 1620 t$

Step 4

The third derivative of $g (t)$ with respect to $t$ is $\frac{45 t^{7}}{2} - 315 t^{5} + 1350 t^{3} - 1620 t$ .

$\frac{45 t^{7}}{2} - 315 t^{5} + 1350 t^{3} - 1620 t$