Calculus Examples

$y = {(\frac{x}{\sqrt{x - 11}})}^{3}$

Step 1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{x - 11}$ as ${(x - 11)}^{\frac{1}{2}}$ .

$\frac{d}{d x} [{(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{3}]$

Step 2

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{3}$ and $g (x) = \frac{x}{{(x - 11)}^{\frac{1}{2}}}$ .

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Step 2.1

To apply the Chain Rule, set $u_{1}$ as $\frac{x}{{(x - 11)}^{\frac{1}{2}}}$ .

$\frac{d}{d u_{1}} [{u_{1}}^{3}] \frac{d}{d x} [\frac{x}{{(x - 11)}^{\frac{1}{2}}}]$

Step 2.2

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

$3 {u_{1}}^{2} \frac{d}{d x} [\frac{x}{{(x - 11)}^{\frac{1}{2}}}]$

Step 2.3

Replace all occurrences of $u_{1}$ with $\frac{x}{{(x - 11)}^{\frac{1}{2}}}$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{d}{d x} [\frac{x}{{(x - 11)}^{\frac{1}{2}}}]$

Step 3

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 $f (x) = x$ and $g (x) = {(x - 11)}^{\frac{1}{2}}$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} \frac{d}{d x} [x] - x \frac{d}{d x} [{(x - 11)}^{\frac{1}{2}}]}{{({(x - 11)}^{\frac{1}{2}})}^{2}}$

Step 4

Multiply the exponents in ${({(x - 11)}^{\frac{1}{2}})}^{2}$ .

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Step 4.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} \frac{d}{d x} [x] - x \frac{d}{d x} [{(x - 11)}^{\frac{1}{2}}]}{{(x - 11)}^{\frac{1}{2} \cdot 2}}$

Step 4.2

Cancel the common factor of $2$ .

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Step 4.2.1

Cancel the common factor.

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} \frac{d}{d x} [x] - x \frac{d}{d x} [{(x - 11)}^{\frac{1}{2}}]}{{(x - 11)}^{\frac{1}{2} \cdot 2}}$

Step 4.2.2

Rewrite the expression.

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} \frac{d}{d x} [x] - x \frac{d}{d x} [{(x - 11)}^{\frac{1}{2}}]}{{(x - 11)}^{1}}$

Step 5

Simplify.

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} \frac{d}{d x} [x] - x \frac{d}{d x} [{(x - 11)}^{\frac{1}{2}}]}{x - 11}$

Step 6

Differentiate using the Power Rule.

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Step 6.1

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

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} \cdot 1 - x \frac{d}{d x} [{(x - 11)}^{\frac{1}{2}}]}{x - 11}$

Step 6.2

Multiply ${(x - 11)}^{\frac{1}{2}}$ by $1$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - x \frac{d}{d x} [{(x - 11)}^{\frac{1}{2}}]}{x - 11}$

Step 7

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{\frac{1}{2}}$ and $g (x) = x - 11$ .

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Step 7.1

To apply the Chain Rule, set $u_{2}$ as $x - 11$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - x (\frac{d}{d u_{2}} [{u_{2}}^{\frac{1}{2}}] \frac{d}{d x} [x - 11])}{x - 11}$

Step 7.2

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

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - x (\frac{1}{2} {u_{2}}^{\frac{1}{2} - 1} \frac{d}{d x} [x - 11])}{x - 11}$

Step 7.3

Replace all occurrences of $u_{2}$ with $x - 11$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - x (\frac{1}{2} {(x - 11)}^{\frac{1}{2} - 1} \frac{d}{d x} [x - 11])}{x - 11}$

Step 8

To write $- 1$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - x (\frac{1}{2} {(x - 11)}^{\frac{1}{2} - 1 \cdot \frac{2}{2}} \frac{d}{d x} [x - 11])}{x - 11}$

Step 9

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

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - x (\frac{1}{2} {(x - 11)}^{\frac{1}{2} + \frac{- 1 \cdot 2}{2}} \frac{d}{d x} [x - 11])}{x - 11}$

Step 10

Combine the numerators over the common denominator.

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - x (\frac{1}{2} {(x - 11)}^{\frac{1 - 1 \cdot 2}{2}} \frac{d}{d x} [x - 11])}{x - 11}$

Step 11

Simplify the numerator.

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Step 11.1

Multiply $- 1$ by $2$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - x (\frac{1}{2} {(x - 11)}^{\frac{1 - 2}{2}} \frac{d}{d x} [x - 11])}{x - 11}$

Step 11.2

Subtract $2$ from $1$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - x (\frac{1}{2} {(x - 11)}^{\frac{- 1}{2}} \frac{d}{d x} [x - 11])}{x - 11}$

Step 12

Combine fractions.

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Step 12.1

Move the negative in front of the fraction.

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - x (\frac{1}{2} {(x - 11)}^{- \frac{1}{2}} \frac{d}{d x} [x - 11])}{x - 11}$

Step 12.2

Combine $\frac{1}{2}$ and ${(x - 11)}^{- \frac{1}{2}}$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - x (\frac{{(x - 11)}^{- \frac{1}{2}}}{2} \frac{d}{d x} [x - 11])}{x - 11}$

Step 12.3

Move ${(x - 11)}^{- \frac{1}{2}}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - x (\frac{1}{2 {(x - 11)}^{\frac{1}{2}}} \frac{d}{d x} [x - 11])}{x - 11}$

Step 12.4

Combine $\frac{1}{2 {(x - 11)}^{\frac{1}{2}}}$ and $x$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - \frac{x}{2 {(x - 11)}^{\frac{1}{2}}} \frac{d}{d x} [x - 11]}{x - 11}$

Step 13

By the Sum Rule, the derivative of $x - 11$ with respect to $x$ is $\frac{d}{d x} [x] + \frac{d}{d x} [- 11]$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - \frac{x}{2 {(x - 11)}^{\frac{1}{2}}} (\frac{d}{d x} [x] + \frac{d}{d x} [- 11])}{x - 11}$

Step 14

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

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - \frac{x}{2 {(x - 11)}^{\frac{1}{2}}} (1 + \frac{d}{d x} [- 11])}{x - 11}$

Step 15

Since $- 11$ is constant with respect to $x$ , the derivative of $- 11$ with respect to $x$ is $0$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - \frac{x}{2 {(x - 11)}^{\frac{1}{2}}} (1 + 0)}{x - 11}$

Step 16

Simplify the expression.

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Step 16.1

Add $1$ and $0$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - \frac{x}{2 {(x - 11)}^{\frac{1}{2}}} \cdot 1}{x - 11}$

Step 16.2

Multiply $- 1$ by $1$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} - \frac{x}{2 {(x - 11)}^{\frac{1}{2}}}}{x - 11}$

Step 17

To write ${(x - 11)}^{\frac{1}{2}}$ as a fraction with a common denominator, multiply by $\frac{2 {(x - 11)}^{\frac{1}{2}}}{2 {(x - 11)}^{\frac{1}{2}}}$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{{(x - 11)}^{\frac{1}{2}} \cdot \frac{2 {(x - 11)}^{\frac{1}{2}}}{2 {(x - 11)}^{\frac{1}{2}}} - \frac{x}{2 {(x - 11)}^{\frac{1}{2}}}}{x - 11}$

Step 18

Combine ${(x - 11)}^{\frac{1}{2}}$ and $\frac{2 {(x - 11)}^{\frac{1}{2}}}{2 {(x - 11)}^{\frac{1}{2}}}$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{\frac{{(x - 11)}^{\frac{1}{2}} (2 {(x - 11)}^{\frac{1}{2}})}{2 {(x - 11)}^{\frac{1}{2}}} - \frac{x}{2 {(x - 11)}^{\frac{1}{2}}}}{x - 11}$

Step 19

Combine the numerators over the common denominator.

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{\frac{{(x - 11)}^{\frac{1}{2}} (2 {(x - 11)}^{\frac{1}{2}}) - x}{2 {(x - 11)}^{\frac{1}{2}}}}{x - 11}$

Step 20

Multiply ${(x - 11)}^{\frac{1}{2}}$ by ${(x - 11)}^{\frac{1}{2}}$ by adding the exponents.

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Step 20.1

Move ${(x - 11)}^{\frac{1}{2}}$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{\frac{{(x - 11)}^{\frac{1}{2}} {(x - 11)}^{\frac{1}{2}} \cdot 2 - x}{2 {(x - 11)}^{\frac{1}{2}}}}{x - 11}$

Step 20.2

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

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{\frac{{(x - 11)}^{\frac{1}{2} + \frac{1}{2}} \cdot 2 - x}{2 {(x - 11)}^{\frac{1}{2}}}}{x - 11}$

Step 20.3

Combine the numerators over the common denominator.

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{\frac{{(x - 11)}^{\frac{1 + 1}{2}} \cdot 2 - x}{2 {(x - 11)}^{\frac{1}{2}}}}{x - 11}$

Step 20.4

Add $1$ and $1$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{\frac{{(x - 11)}^{\frac{2}{2}} \cdot 2 - x}{2 {(x - 11)}^{\frac{1}{2}}}}{x - 11}$

Step 20.5

Divide $2$ by $2$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{\frac{{(x - 11)}^{1} \cdot 2 - x}{2 {(x - 11)}^{\frac{1}{2}}}}{x - 11}$

Step 21

Simplify ${(x - 11)}^{1} \cdot 2$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{\frac{(x - 11) \cdot 2 - x}{2 {(x - 11)}^{\frac{1}{2}}}}{x - 11}$

Step 22

Move $2$ to the left of $x - 11$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{\frac{2 \cdot (x - 11) - x}{2 {(x - 11)}^{\frac{1}{2}}}}{x - 11}$

Step 23

Rewrite $\frac{\frac{2 (x - 11) - x}{2 {(x - 11)}^{\frac{1}{2}}}}{x - 11}$ as a product.

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} (\frac{2 (x - 11) - x}{2 {(x - 11)}^{\frac{1}{2}}} \cdot \frac{1}{x - 11})$

Step 24

Multiply $\frac{2 (x - 11) - x}{2 {(x - 11)}^{\frac{1}{2}}}$ by $\frac{1}{x - 11}$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{2 (x - 11) - x}{2 {(x - 11)}^{\frac{1}{2}} (x - 11)}$

Step 25

Raise $x - 11$ to the power of $1$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{2 (x - 11) - x}{2 ({(x - 11)}^{1} {(x - 11)}^{\frac{1}{2}})}$

Step 26

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

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{2 (x - 11) - x}{2 {(x - 11)}^{1 + \frac{1}{2}}}$

Step 27

Simplify the expression.

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Step 27.1

Write $1$ as a fraction with a common denominator.

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{2 (x - 11) - x}{2 {(x - 11)}^{\frac{2}{2} + \frac{1}{2}}}$

Step 27.2

Combine the numerators over the common denominator.

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{2 (x - 11) - x}{2 {(x - 11)}^{\frac{2 + 1}{2}}}$

Step 27.3

Add $2$ and $1$ .

$3 {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2} \frac{2 (x - 11) - x}{2 {(x - 11)}^{\frac{3}{2}}}$

Step 28

Combine $\frac{2 (x - 11) - x}{2 {(x - 11)}^{\frac{3}{2}}}$ and $3$ .

$\frac{(2 (x - 11) - x) \cdot 3}{2 {(x - 11)}^{\frac{3}{2}}} {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2}$

Step 29

Move $3$ to the left of $2 (x - 11) - x$ .

$\frac{3 \cdot (2 (x - 11) - x)}{2 {(x - 11)}^{\frac{3}{2}}} {(\frac{x}{{(x - 11)}^{\frac{1}{2}}})}^{2}$

Step 30

Simplify.

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Step 30.1

Apply the product rule to $\frac{x}{{(x - 11)}^{\frac{1}{2}}}$ .

$\frac{3 (2 (x - 11) - x)}{2 {(x - 11)}^{\frac{3}{2}}} \cdot \frac{x^{2}}{{({(x - 11)}^{\frac{1}{2}})}^{2}}$

Step 30.2

Apply the distributive property.

$\frac{3 (2 x + 2 \cdot - 11 - x)}{2 {(x - 11)}^{\frac{3}{2}}} \cdot \frac{x^{2}}{{({(x - 11)}^{\frac{1}{2}})}^{2}}$

Step 30.3

Apply the distributive property.

$\frac{3 (2 x) + 3 (2 \cdot - 11) + 3 (- x)}{2 {(x - 11)}^{\frac{3}{2}}} \cdot \frac{x^{2}}{{({(x - 11)}^{\frac{1}{2}})}^{2}}$

Step 30.4

Combine terms.

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Step 30.4.1

Multiply $2$ by $3$ .

$\frac{6 x + 3 (2 \cdot - 11) + 3 (- x)}{2 {(x - 11)}^{\frac{3}{2}}} \cdot \frac{x^{2}}{{({(x - 11)}^{\frac{1}{2}})}^{2}}$

Step 30.4.2

Multiply $2$ by $- 11$ .

$\frac{6 x + 3 \cdot - 22 + 3 (- x)}{2 {(x - 11)}^{\frac{3}{2}}} \cdot \frac{x^{2}}{{({(x - 11)}^{\frac{1}{2}})}^{2}}$

Step 30.4.3

Multiply $3$ by $- 22$ .

$\frac{6 x - 66 + 3 (- x)}{2 {(x - 11)}^{\frac{3}{2}}} \cdot \frac{x^{2}}{{({(x - 11)}^{\frac{1}{2}})}^{2}}$

Step 30.4.4

Multiply $- 1$ by $3$ .

$\frac{6 x - 66 - 3 x}{2 {(x - 11)}^{\frac{3}{2}}} \cdot \frac{x^{2}}{{({(x - 11)}^{\frac{1}{2}})}^{2}}$

Step 30.4.5

Subtract $3 x$ from $6 x$ .

$\frac{3 x - 66}{2 {(x - 11)}^{\frac{3}{2}}} \cdot \frac{x^{2}}{{({(x - 11)}^{\frac{1}{2}})}^{2}}$

Step 30.4.6

Multiply the exponents in ${({(x - 11)}^{\frac{1}{2}})}^{2}$ .

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Step 30.4.6.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$\frac{3 x - 66}{2 {(x - 11)}^{\frac{3}{2}}} \cdot \frac{x^{2}}{{(x - 11)}^{\frac{1}{2} \cdot 2}}$

Step 30.4.6.2

Cancel the common factor of $2$ .

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Step 30.4.6.2.1

Cancel the common factor.

$\frac{3 x - 66}{2 {(x - 11)}^{\frac{3}{2}}} \cdot \frac{x^{2}}{{(x - 11)}^{\frac{1}{2} \cdot 2}}$

Step 30.4.6.2.2

Rewrite the expression.

$\frac{3 x - 66}{2 {(x - 11)}^{\frac{3}{2}}} \cdot \frac{x^{2}}{{(x - 11)}^{1}}$

Step 30.4.7

Simplify.

$\frac{3 x - 66}{2 {(x - 11)}^{\frac{3}{2}}} \cdot \frac{x^{2}}{x - 11}$

Step 30.4.8

Multiply $\frac{3 x - 66}{2 {(x - 11)}^{\frac{3}{2}}}$ by $\frac{x^{2}}{x - 11}$ .

$\frac{(3 x - 66) x^{2}}{2 {(x - 11)}^{\frac{3}{2}} (x - 11)}$

Step 30.4.9

Raise $x - 11$ to the power of $1$ .

$\frac{(3 x - 66) x^{2}}{2 ({(x - 11)}^{1} {(x - 11)}^{\frac{3}{2}})}$

Step 30.4.10

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

$\frac{(3 x - 66) x^{2}}{2 {(x - 11)}^{1 + \frac{3}{2}}}$

Step 30.4.11

Write $1$ as a fraction with a common denominator.

$\frac{(3 x - 66) x^{2}}{2 {(x - 11)}^{\frac{2}{2} + \frac{3}{2}}}$

Step 30.4.12

Combine the numerators over the common denominator.

$\frac{(3 x - 66) x^{2}}{2 {(x - 11)}^{\frac{2 + 3}{2}}}$

Step 30.4.13

Add $2$ and $3$ .

$\frac{(3 x - 66) x^{2}}{2 {(x - 11)}^{\frac{5}{2}}}$

Step 30.5

Reorder terms.

$\frac{x^{2} (3 x - 66)}{2 {(x - 11)}^{\frac{5}{2}}}$

Step 30.6

Factor $3$ out of $3 x - 66$ .

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Step 30.6.1

Factor $3$ out of $3 x$ .

$\frac{x^{2} (3 (x) - 66)}{2 {(x - 11)}^{\frac{5}{2}}}$

Step 30.6.2

Factor $3$ out of $- 66$ .

$\frac{x^{2} (3 x + 3 \cdot - 22)}{2 {(x - 11)}^{\frac{5}{2}}}$

Step 30.6.3

Factor $3$ out of $3 x + 3 \cdot - 22$ .

$\frac{x^{2} (3 (x - 22))}{2 {(x - 11)}^{\frac{5}{2}}}$

$\frac{x^{2} \cdot 3 (x - 22)}{2 {(x - 11)}^{\frac{5}{2}}}$

Step 30.7

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

$\frac{3 x^{2} (x - 22)}{2 {(x - 11)}^{\frac{5}{2}}}$