Calculus Examples

$\frac{6 \tan (t)}{7 + 7 \sec (t)}$

Step 1

Since $6$ is constant with respect to $t$ , the derivative of $\frac{6 \tan (t)}{7 + 7 \sec (t)}$ with respect to $t$ is $6 \frac{d}{d t} [\frac{\tan (t)}{7 + 7 \sec (t)}]$ .

$6 \frac{d}{d t} [\frac{\tan (t)}{7 + 7 \sec (t)}]$

Step 2

Differentiate using the Quotient Rule which states that $\frac{d}{d t} [\frac{f (t)}{g (t)}]$ is $\frac{g (t) \frac{d}{d t} [f (t)] - f (t) \frac{d}{d t} [g (t)]}{{g (t)}^{2}}$ where $f (t) = \tan (t)$ and $g (t) = 7 + 7 \sec (t)$ .

$6 \frac{(7 + 7 \sec (t)) \frac{d}{d t} [\tan (t)] - \tan (t) \frac{d}{d t} [7 + 7 \sec (t)]}{{(7 + 7 \sec (t))}^{2}}$

Step 3

The derivative of $\tan (t)$ with respect to $t$ is $\sec^{2} (t)$ .

$6 \frac{(7 + 7 \sec (t)) \sec^{2} (t) - \tan (t) \frac{d}{d t} [7 + 7 \sec (t)]}{{(7 + 7 \sec (t))}^{2}}$

Step 4

Differentiate.

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Step 4.1

By the Sum Rule, the derivative of $7 + 7 \sec (t)$ with respect to $t$ is $\frac{d}{d t} [7] + \frac{d}{d t} [7 \sec (t)]$ .

$6 \frac{(7 + 7 \sec (t)) \sec^{2} (t) - \tan (t) (\frac{d}{d t} [7] + \frac{d}{d t} [7 \sec (t)])}{{(7 + 7 \sec (t))}^{2}}$

Step 4.2

Since $7$ is constant with respect to $t$ , the derivative of $7$ with respect to $t$ is $0$ .

$6 \frac{(7 + 7 \sec (t)) \sec^{2} (t) - \tan (t) (0 + \frac{d}{d t} [7 \sec (t)])}{{(7 + 7 \sec (t))}^{2}}$

Step 4.3

Add $0$ and $\frac{d}{d t} [7 \sec (t)]$ .

$6 \frac{(7 + 7 \sec (t)) \sec^{2} (t) - \tan (t) \frac{d}{d t} [7 \sec (t)]}{{(7 + 7 \sec (t))}^{2}}$

Step 4.4

Since $7$ is constant with respect to $t$ , the derivative of $7 \sec (t)$ with respect to $t$ is $7 \frac{d}{d t} [\sec (t)]$ .

$6 \frac{(7 + 7 \sec (t)) \sec^{2} (t) - \tan (t) (7 \frac{d}{d t} [\sec (t)])}{{(7 + 7 \sec (t))}^{2}}$

Step 4.5

Multiply $7$ by $- 1$ .

$6 \frac{(7 + 7 \sec (t)) \sec^{2} (t) - 7 \tan (t) \frac{d}{d t} [\sec (t)]}{{(7 + 7 \sec (t))}^{2}}$

Step 5

The derivative of $\sec (t)$ with respect to $t$ is $\sec (t) \tan (t)$ .

$6 \frac{(7 + 7 \sec (t)) \sec^{2} (t) - 7 \tan (t) (\sec (t) \tan (t))}{{(7 + 7 \sec (t))}^{2}}$

Step 6

Raise $\tan (t)$ to the power of $1$ .

$6 \frac{(7 + 7 \sec (t)) \sec^{2} (t) - 7 (\tan^{1} (t) \tan (t)) \sec (t)}{{(7 + 7 \sec (t))}^{2}}$

Step 7

Raise $\tan (t)$ to the power of $1$ .

$6 \frac{(7 + 7 \sec (t)) \sec^{2} (t) - 7 (\tan^{1} (t) \tan^{1} (t)) \sec (t)}{{(7 + 7 \sec (t))}^{2}}$

Step 8

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

$6 \frac{(7 + 7 \sec (t)) \sec^{2} (t) - 7 {\tan (t)}^{1 + 1} \sec (t)}{{(7 + 7 \sec (t))}^{2}}$

Step 9

Add $1$ and $1$ .

$6 \frac{(7 + 7 \sec (t)) \sec^{2} (t) - 7 \tan^{2} (t) \sec (t)}{{(7 + 7 \sec (t))}^{2}}$

Step 10

Combine $6$ and $\frac{(7 + 7 \sec (t)) \sec^{2} (t) - 7 \tan^{2} (t) \sec (t)}{{(7 + 7 \sec (t))}^{2}}$ .

$\frac{6 ((7 + 7 \sec (t)) \sec^{2} (t) - 7 \tan^{2} (t) \sec (t))}{{(7 + 7 \sec (t))}^{2}}$

Step 11

Simplify.

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Step 11.1

Apply the distributive property.

$\frac{6 (7 \sec^{2} (t) + 7 \sec (t) \sec^{2} (t) - 7 \tan^{2} (t) \sec (t))}{{(7 + 7 \sec (t))}^{2}}$

Step 11.2

Apply the distributive property.

$\frac{6 (7 \sec^{2} (t)) + 6 (7 \sec (t) \sec^{2} (t)) + 6 (- 7 \tan^{2} (t) \sec (t))}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3

Simplify the numerator.

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Step 11.3.1

Factor $6 \sec (t)$ out of $6 (7 \sec^{2} (t)) + 6 (7 \sec (t) \sec^{2} (t)) + 6 (- 7 \tan^{2} (t) \sec (t))$ .

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Step 11.3.1.1

Factor $6 \sec (t)$ out of $6 (7 \sec^{2} (t))$ .

$\frac{6 \sec (t) (7 \sec (t)) + 6 (7 \sec (t) \sec^{2} (t)) + 6 (- 7 \tan^{2} (t) \sec (t))}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.1.2

Factor $6 \sec (t)$ out of $6 (7 \sec (t) \sec^{2} (t))$ .

$\frac{6 \sec (t) (7 \sec (t)) + 6 \sec (t) (7 \sec^{2} (t)) + 6 (- 7 \tan^{2} (t) \sec (t))}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.1.3

Factor $6 \sec (t)$ out of $6 (- 7 \tan^{2} (t) \sec (t))$ .

$\frac{6 \sec (t) (7 \sec (t)) + 6 \sec (t) (7 \sec^{2} (t)) + 6 \sec (t) (- 7 \tan^{2} (t))}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.1.4

Factor $6 \sec (t)$ out of $6 \sec (t) (7 \sec (t)) + 6 \sec (t) (7 \sec^{2} (t))$ .

$\frac{6 \sec (t) (7 \sec (t) + 7 \sec^{2} (t)) + 6 \sec (t) (- 7 \tan^{2} (t))}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.1.5

Factor $6 \sec (t)$ out of $6 \sec (t) (7 \sec (t) + 7 \sec^{2} (t)) + 6 \sec (t) (- 7 \tan^{2} (t))$ .

$\frac{6 \sec (t) (7 \sec (t) + 7 \sec^{2} (t) - 7 \tan^{2} (t))}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.2

Factor $7$ out of $7 \sec^{2} (t)$ .

$\frac{6 \sec (t) (7 \sec (t) + 7 (\sec^{2} (t)) - 7 \tan^{2} (t))}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.3

Factor $7$ out of $- 7 \tan^{2} (t)$ .

$\frac{6 \sec (t) (7 \sec (t) + 7 (\sec^{2} (t)) + 7 (- \tan^{2} (t)))}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.4

Factor $7$ out of $7 (\sec^{2} (t)) + 7 (- \tan^{2} (t))$ .

$\frac{6 \sec (t) (7 \sec (t) + 7 (\sec^{2} (t) - \tan^{2} (t)))}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.5

Apply pythagorean identity.

$\frac{6 \sec (t) (7 \sec (t) + 7 \cdot 1)}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.6

Multiply $7$ by $1$ .

$\frac{6 \sec (t) (7 \sec (t) + 7)}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.7

Apply the distributive property.

$\frac{6 \sec (t) (7 \sec (t)) + 6 \sec (t) \cdot 7}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.8

Multiply $6 \sec (t) (7 \sec (t))$ .

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Step 11.3.8.1

Multiply $7$ by $6$ .

$\frac{42 \sec (t) \sec (t) + 6 \sec (t) \cdot 7}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.8.2

Raise $\sec (t)$ to the power of $1$ .

$\frac{42 (\sec^{1} (t) \sec (t)) + 6 \sec (t) \cdot 7}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.8.3

Raise $\sec (t)$ to the power of $1$ .

$\frac{42 (\sec^{1} (t) \sec^{1} (t)) + 6 \sec (t) \cdot 7}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.8.4

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

$\frac{42 {\sec (t)}^{1 + 1} + 6 \sec (t) \cdot 7}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.8.5

Add $1$ and $1$ .

$\frac{42 \sec^{2} (t) + 6 \sec (t) \cdot 7}{{(7 + 7 \sec (t))}^{2}}$

Step 11.3.9

Multiply $7$ by $6$ .

$\frac{42 \sec^{2} (t) + 42 \sec (t)}{{(7 + 7 \sec (t))}^{2}}$

Step 11.4

Factor $42 \sec (t)$ out of $42 \sec^{2} (t) + 42 \sec (t)$ .

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Step 11.4.1

Factor $42 \sec (t)$ out of $42 \sec^{2} (t)$ .

$\frac{42 \sec (t) (\sec (t)) + 42 \sec (t)}{{(7 + 7 \sec (t))}^{2}}$

Step 11.4.2

Factor $42 \sec (t)$ out of $42 \sec (t)$ .

$\frac{42 \sec (t) (\sec (t)) + 42 \sec (t) (1)}{{(7 + 7 \sec (t))}^{2}}$

Step 11.4.3

Factor $42 \sec (t)$ out of $42 \sec (t) (\sec (t)) + 42 \sec (t) (1)$ .

$\frac{42 \sec (t) (\sec (t) + 1)}{{(7 + 7 \sec (t))}^{2}}$

Step 11.5

Simplify the denominator.

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Step 11.5.1

Factor $7$ out of $7 + 7 \sec (t)$ .

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Step 11.5.1.1

Factor $7$ out of $7$ .

$\frac{42 \sec (t) (\sec (t) + 1)}{{(7 \cdot 1 + 7 \sec (t))}^{2}}$

Step 11.5.1.2

Factor $7$ out of $7 \cdot 1 + 7 \sec (t)$ .

$\frac{42 \sec (t) (\sec (t) + 1)}{{(7 (1 + \sec (t)))}^{2}}$

Step 11.5.2

Apply the product rule to $7 (1 + \sec (t))$ .

$\frac{42 \sec (t) (\sec (t) + 1)}{7^{2} {(1 + \sec (t))}^{2}}$

Step 11.5.3

Raise $7$ to the power of $2$ .

$\frac{42 \sec (t) (\sec (t) + 1)}{49 {(1 + \sec (t))}^{2}}$

Step 11.6

Cancel the common factor of $42$ and $49$ .

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Step 11.6.1

Factor $7$ out of $42 \sec (t) (\sec (t) + 1)$ .

$\frac{7 (6 \sec (t) (\sec (t) + 1))}{49 {(1 + \sec (t))}^{2}}$

Step 11.6.2

Cancel the common factors.

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Step 11.6.2.1

Factor $7$ out of $49 {(1 + \sec (t))}^{2}$ .

$\frac{7 (6 \sec (t) (\sec (t) + 1))}{7 (7 {(1 + \sec (t))}^{2})}$

Step 11.6.2.2

Cancel the common factor.

$\frac{7 (6 \sec (t) (\sec (t) + 1))}{7 (7 {(1 + \sec (t))}^{2})}$

Step 11.6.2.3

Rewrite the expression.

$\frac{6 \sec (t) (\sec (t) + 1)}{7 {(1 + \sec (t))}^{2}}$

Step 11.7

Cancel the common factor of $\sec (t) + 1$ and ${(1 + \sec (t))}^{2}$ .

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Step 11.7.1

Reorder terms.

$\frac{6 \sec (t) (1 + \sec (t))}{7 {(1 + \sec (t))}^{2}}$

Step 11.7.2

Factor $1 + \sec (t)$ out of $6 \sec (t) (1 + \sec (t))$ .

$\frac{(1 + \sec (t)) (6 \sec (t))}{7 {(1 + \sec (t))}^{2}}$

Step 11.7.3

Cancel the common factors.

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Step 11.7.3.1

Factor $1 + \sec (t)$ out of $7 {(1 + \sec (t))}^{2}$ .

$\frac{(1 + \sec (t)) (6 \sec (t))}{(1 + \sec (t)) (7 (1 + \sec (t)))}$

Step 11.7.3.2

Cancel the common factor.

$\frac{(1 + \sec (t)) (6 \sec (t))}{(1 + \sec (t)) (7 (1 + \sec (t)))}$

Step 11.7.3.3

Rewrite the expression.

$\frac{6 \sec (t)}{7 (1 + \sec (t))}$