Calculus Examples

$y = \frac{\log_{6} (x)}{3 + x^{6}}$

Step 1

Differentiate using the Quotient Rule which states that $\frac{d}{d x} [\frac{f (x)}{g (x)}]$ is $\frac{g (x) \frac{d}{d x} [f (x)] - f (x) \frac{d}{d x} [g (x)]}{{g (x)}^{2}}$ where $f (x) = \log_{6} (x)$ and $g (x) = 3 + x^{6}$ .

$\frac{(3 + x^{6}) \frac{d}{d x} [\log_{6} (x)] - \log_{6} (x) \frac{d}{d x} [3 + x^{6}]}{{(3 + x^{6})}^{2}}$

Step 2

The derivative of $\log_{6} (x)$ with respect to $x$ is $\frac{1}{x \ln (6)}$ .

$\frac{(3 + x^{6}) \frac{1}{x \ln (6)} - \log_{6} (x) \frac{d}{d x} [3 + x^{6}]}{{(3 + x^{6})}^{2}}$

Step 3

Differentiate.

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Step 3.1

By the Sum Rule, the derivative of $3 + x^{6}$ with respect to $x$ is $\frac{d}{d x} [3] + \frac{d}{d x} [x^{6}]$ .

$\frac{(3 + x^{6}) \frac{1}{x \ln (6)} - \log_{6} (x) (\frac{d}{d x} [3] + \frac{d}{d x} [x^{6}])}{{(3 + x^{6})}^{2}}$

Step 3.2

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

$\frac{(3 + x^{6}) \frac{1}{x \ln (6)} - \log_{6} (x) (0 + \frac{d}{d x} [x^{6}])}{{(3 + x^{6})}^{2}}$

Step 3.3

Add $0$ and $\frac{d}{d x} [x^{6}]$ .

$\frac{(3 + x^{6}) \frac{1}{x \ln (6)} - \log_{6} (x) \frac{d}{d x} [x^{6}]}{{(3 + x^{6})}^{2}}$

Step 3.4

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 6$ .

$\frac{(3 + x^{6}) \frac{1}{x \ln (6)} - \log_{6} (x) (6 x^{5})}{{(3 + x^{6})}^{2}}$

Step 3.5

Multiply $6$ by $- 1$ .

$\frac{(3 + x^{6}) \frac{1}{x \ln (6)} - 6 \log_{6} (x) x^{5}}{{(3 + x^{6})}^{2}}$

Step 4

Simplify.

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Step 4.1

Apply the distributive property.

$\frac{3 \frac{1}{x \ln (6)} + x^{6} \frac{1}{x \ln (6)} - 6 \log_{6} (x) x^{5}}{{(3 + x^{6})}^{2}}$

Step 4.2

Simplify the numerator.

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Step 4.2.1

Simplify each term.

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Step 4.2.1.1

Combine $3$ and $\frac{1}{x \ln (6)}$ .

$\frac{\frac{3}{x \ln (6)} + x^{6} \frac{1}{x \ln (6)} - 6 \log_{6} (x) x^{5}}{{(3 + x^{6})}^{2}}$

Step 4.2.1.2

Cancel the common factor of $x$ .

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Step 4.2.1.2.1

Factor $x$ out of $x^{6}$ .

$\frac{\frac{3}{x \ln (6)} + x \cdot x^{5} \frac{1}{x \ln (6)} - 6 \log_{6} (x) x^{5}}{{(3 + x^{6})}^{2}}$

Step 4.2.1.2.2

Factor $x$ out of $x \ln (6)$ .

$\frac{\frac{3}{x \ln (6)} + x \cdot x^{5} \frac{1}{x (\ln (6))} - 6 \log_{6} (x) x^{5}}{{(3 + x^{6})}^{2}}$

Step 4.2.1.2.3

Cancel the common factor.

$\frac{\frac{3}{x \ln (6)} + x \cdot x^{5} \frac{1}{x \ln (6)} - 6 \log_{6} (x) x^{5}}{{(3 + x^{6})}^{2}}$

Step 4.2.1.2.4

Rewrite the expression.

$\frac{\frac{3}{x \ln (6)} + x^{5} \frac{1}{\ln (6)} - 6 \log_{6} (x) x^{5}}{{(3 + x^{6})}^{2}}$

Step 4.2.1.3

Combine $x^{5}$ and $\frac{1}{\ln (6)}$ .

$\frac{\frac{3}{x \ln (6)} + \frac{x^{5}}{\ln (6)} - 6 \log_{6} (x) x^{5}}{{(3 + x^{6})}^{2}}$

Step 4.2.1.4

Simplify $- 6 \log_{6} (x)$ by moving $6$ inside the logarithm.

$\frac{\frac{3}{x \ln (6)} + \frac{x^{5}}{\ln (6)} - \log_{6} (x^{6}) x^{5}}{{(3 + x^{6})}^{2}}$

Step 4.2.2

Reorder factors in $\frac{3}{x \ln (6)} + \frac{x^{5}}{\ln (6)} - \log_{6} (x^{6}) x^{5}$ .

$\frac{\frac{3}{x \ln (6)} + \frac{x^{5}}{\ln (6)} - x^{5} \log_{6} (x^{6})}{{(3 + x^{6})}^{2}}$

Step 4.3

Combine terms.

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Step 4.3.1

Multiply $\frac{\frac{3}{x \ln (6)} + \frac{x^{5}}{\ln (6)} - x^{5} \log_{6} (x^{6})}{{(3 + x^{6})}^{2}}$ by $\frac{x \ln (6)}{x \ln (6)}$ .

$\frac{x \ln (6)}{x \ln (6)} \cdot \frac{\frac{3}{x \ln (6)} + \frac{x^{5}}{\ln (6)} - x^{5} \log_{6} (x^{6})}{{(3 + x^{6})}^{2}}$

Step 4.3.2

Combine.

$\frac{x \ln (6) (\frac{3}{x \ln (6)} + \frac{x^{5}}{\ln (6)} - x^{5} \log_{6} (x^{6}))}{x \ln (6) {(3 + x^{6})}^{2}}$

Step 4.3.3

Apply the distributive property.

$\frac{x \ln (6) \frac{3}{x \ln (6)} + x \ln (6) \frac{x^{5}}{\ln (6)} + x \ln (6) (- x^{5} \log_{6} (x^{6}))}{x \ln (6) {(3 + x^{6})}^{2}}$

Step 4.3.4

Cancel the common factor of $x \ln (6)$ .

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Step 4.3.4.1

Cancel the common factor.

$\frac{x \ln (6) \frac{3}{x \ln (6)} + x \ln (6) \frac{x^{5}}{\ln (6)} + x \ln (6) (- x^{5} \log_{6} (x^{6}))}{x \ln (6) {(3 + x^{6})}^{2}}$

Step 4.3.4.2

Rewrite the expression.

$\frac{3 + x \ln (6) \frac{x^{5}}{\ln (6)} + x \ln (6) (- x^{5} \log_{6} (x^{6}))}{x \ln (6) {(3 + x^{6})}^{2}}$

Step 4.3.5

Cancel the common factor of $\ln (6)$ .

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Step 4.3.5.1

Factor $\ln (6)$ out of $x \ln (6)$ .

$\frac{3 + \ln (6) x \frac{x^{5}}{\ln (6)} + x \ln (6) (- x^{5} \log_{6} (x^{6}))}{x \ln (6) {(3 + x^{6})}^{2}}$

Step 4.3.5.2

Cancel the common factor.

$\frac{3 + \ln (6) x \frac{x^{5}}{\ln (6)} + x \ln (6) (- x^{5} \log_{6} (x^{6}))}{x \ln (6) {(3 + x^{6})}^{2}}$

Step 4.3.5.3

Rewrite the expression.

$\frac{3 + x \cdot x^{5} + x \ln (6) (- x^{5} \log_{6} (x^{6}))}{x \ln (6) {(3 + x^{6})}^{2}}$

Step 4.3.6

Multiply $x$ by $x^{5}$ by adding the exponents.

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Step 4.3.6.1

Multiply $x$ by $x^{5}$ .

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Step 4.3.6.1.1

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

$\frac{3 + x^{1} x^{5} + x \ln (6) (- x^{5} \log_{6} (x^{6}))}{x \ln (6) {(3 + x^{6})}^{2}}$

Step 4.3.6.1.2

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

$\frac{3 + x^{1 + 5} + x \ln (6) (- x^{5} \log_{6} (x^{6}))}{x \ln (6) {(3 + x^{6})}^{2}}$

Step 4.3.6.2

Add $1$ and $5$ .

$\frac{3 + x^{6} + x \ln (6) (- x^{5} \log_{6} (x^{6}))}{x \ln (6) {(3 + x^{6})}^{2}}$

Step 4.3.7

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

$\frac{3 + x^{6} + x^{5} x^{1} \ln (6) (- \log_{6} (x^{6}))}{x \ln (6) {(3 + x^{6})}^{2}}$

Step 4.3.8

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

$\frac{3 + x^{6} + x^{5 + 1} \ln (6) (- \log_{6} (x^{6}))}{x \ln (6) {(3 + x^{6})}^{2}}$

Step 4.3.9

Add $5$ and $1$ .

$\frac{3 + x^{6} + x^{6} \ln (6) (- \log_{6} (x^{6}))}{x \ln (6) {(3 + x^{6})}^{2}}$

Step 4.4

Reorder terms.

$\frac{x^{6} - x^{6} \ln (6) \log_{6} (x^{6}) + 3}{x {(3 + x^{6})}^{2} \ln (6)}$