Calculus Examples

$f (x) = \frac{550 x^{2}}{\sqrt{x^{2} + 12}}$

Step 1

Differentiate using the Constant Multiple Rule.

Tap for more steps...

Step 1.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{x^{2} + 12}$ as ${(x^{2} + 12)}^{\frac{1}{2}}$ .

$\frac{d}{d x} [\frac{550 x^{2}}{{(x^{2} + 12)}^{\frac{1}{2}}}]$

Step 1.2

Since $550$ is constant with respect to $x$ , the derivative of $\frac{550 x^{2}}{{(x^{2} + 12)}^{\frac{1}{2}}}$ with respect to $x$ is $550 \frac{d}{d x} [\frac{x^{2}}{{(x^{2} + 12)}^{\frac{1}{2}}}]$ .

$550 \frac{d}{d x} [\frac{x^{2}}{{(x^{2} + 12)}^{\frac{1}{2}}}]$

Step 2

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 $f (x) = x^{2}$ and $g (x) = {(x^{2} + 12)}^{\frac{1}{2}}$ .

$550 \frac{{(x^{2} + 12)}^{\frac{1}{2}} \frac{d}{d x} [x^{2}] - x^{2} \frac{d}{d x} [{(x^{2} + 12)}^{\frac{1}{2}}]}{{({(x^{2} + 12)}^{\frac{1}{2}})}^{2}}$

Step 3

Multiply the exponents in ${({(x^{2} + 12)}^{\frac{1}{2}})}^{2}$ .

Tap for more steps...

Step 3.1

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

$550 \frac{{(x^{2} + 12)}^{\frac{1}{2}} \frac{d}{d x} [x^{2}] - x^{2} \frac{d}{d x} [{(x^{2} + 12)}^{\frac{1}{2}}]}{{(x^{2} + 12)}^{\frac{1}{2} \cdot 2}}$

Step 3.2

Cancel the common factor of $2$ .

Tap for more steps...

Step 3.2.1

Cancel the common factor.

$550 \frac{{(x^{2} + 12)}^{\frac{1}{2}} \frac{d}{d x} [x^{2}] - x^{2} \frac{d}{d x} [{(x^{2} + 12)}^{\frac{1}{2}}]}{{(x^{2} + 12)}^{\frac{1}{2} \cdot 2}}$

Step 3.2.2

Rewrite the expression.

$550 \frac{{(x^{2} + 12)}^{\frac{1}{2}} \frac{d}{d x} [x^{2}] - x^{2} \frac{d}{d x} [{(x^{2} + 12)}^{\frac{1}{2}}]}{{(x^{2} + 12)}^{1}}$

Step 4

Simplify.

$550 \frac{{(x^{2} + 12)}^{\frac{1}{2}} \frac{d}{d x} [x^{2}] - x^{2} \frac{d}{d x} [{(x^{2} + 12)}^{\frac{1}{2}}]}{x^{2} + 12}$

Step 5

Differentiate using the Power Rule.

Tap for more steps...

Step 5.1

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

$550 \frac{{(x^{2} + 12)}^{\frac{1}{2}} (2 x) - x^{2} \frac{d}{d x} [{(x^{2} + 12)}^{\frac{1}{2}}]}{x^{2} + 12}$

Step 5.2

Move $2$ to the left of ${(x^{2} + 12)}^{\frac{1}{2}}$ .

$550 \frac{2 \cdot {(x^{2} + 12)}^{\frac{1}{2}} x - x^{2} \frac{d}{d x} [{(x^{2} + 12)}^{\frac{1}{2}}]}{x^{2} + 12}$

Step 6

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 $g (x) = x^{2} + 12$ .

Tap for more steps...

Step 6.1

To apply the Chain Rule, set $u$ as $x^{2} + 12$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - x^{2} (\frac{d}{d u} [u^{\frac{1}{2}}] \frac{d}{d x} [x^{2} + 12])}{x^{2} + 12}$

Step 6.2

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

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - x^{2} (\frac{1}{2} u^{\frac{1}{2} - 1} \frac{d}{d x} [x^{2} + 12])}{x^{2} + 12}$

Step 6.3

Replace all occurrences of $u$ with $x^{2} + 12$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - x^{2} (\frac{1}{2} {(x^{2} + 12)}^{\frac{1}{2} - 1} \frac{d}{d x} [x^{2} + 12])}{x^{2} + 12}$

Step 7

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

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - x^{2} (\frac{1}{2} {(x^{2} + 12)}^{\frac{1}{2} - 1 \cdot \frac{2}{2}} \frac{d}{d x} [x^{2} + 12])}{x^{2} + 12}$

Step 8

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

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - x^{2} (\frac{1}{2} {(x^{2} + 12)}^{\frac{1}{2} + \frac{- 1 \cdot 2}{2}} \frac{d}{d x} [x^{2} + 12])}{x^{2} + 12}$

Step 9

Combine the numerators over the common denominator.

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - x^{2} (\frac{1}{2} {(x^{2} + 12)}^{\frac{1 - 1 \cdot 2}{2}} \frac{d}{d x} [x^{2} + 12])}{x^{2} + 12}$

Step 10

Simplify the numerator.

Tap for more steps...

Step 10.1

Multiply $- 1$ by $2$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - x^{2} (\frac{1}{2} {(x^{2} + 12)}^{\frac{1 - 2}{2}} \frac{d}{d x} [x^{2} + 12])}{x^{2} + 12}$

Step 10.2

Subtract $2$ from $1$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - x^{2} (\frac{1}{2} {(x^{2} + 12)}^{\frac{- 1}{2}} \frac{d}{d x} [x^{2} + 12])}{x^{2} + 12}$

Step 11

Combine fractions.

Tap for more steps...

Step 11.1

Move the negative in front of the fraction.

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - x^{2} (\frac{1}{2} {(x^{2} + 12)}^{- \frac{1}{2}} \frac{d}{d x} [x^{2} + 12])}{x^{2} + 12}$

Step 11.2

Combine $\frac{1}{2}$ and ${(x^{2} + 12)}^{- \frac{1}{2}}$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - x^{2} (\frac{{(x^{2} + 12)}^{- \frac{1}{2}}}{2} \frac{d}{d x} [x^{2} + 12])}{x^{2} + 12}$

Step 11.3

Move ${(x^{2} + 12)}^{- \frac{1}{2}}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - x^{2} (\frac{1}{2 {(x^{2} + 12)}^{\frac{1}{2}}} \frac{d}{d x} [x^{2} + 12])}{x^{2} + 12}$

Step 11.4

Combine $\frac{1}{2 {(x^{2} + 12)}^{\frac{1}{2}}}$ and $x^{2}$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - \frac{x^{2}}{2 {(x^{2} + 12)}^{\frac{1}{2}}} \frac{d}{d x} [x^{2} + 12]}{x^{2} + 12}$

Step 12

By the Sum Rule, the derivative of $x^{2} + 12$ with respect to $x$ is $\frac{d}{d x} [x^{2}] + \frac{d}{d x} [12]$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - \frac{x^{2}}{2 {(x^{2} + 12)}^{\frac{1}{2}}} (\frac{d}{d x} [x^{2}] + \frac{d}{d x} [12])}{x^{2} + 12}$

Step 13

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

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - \frac{x^{2}}{2 {(x^{2} + 12)}^{\frac{1}{2}}} (2 x + \frac{d}{d x} [12])}{x^{2} + 12}$

Step 14

Since $12$ is constant with respect to $x$ , the derivative of $12$ with respect to $x$ is $0$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - \frac{x^{2}}{2 {(x^{2} + 12)}^{\frac{1}{2}}} (2 x + 0)}{x^{2} + 12}$

Step 15

Combine fractions.

Tap for more steps...

Step 15.1

Add $2 x$ and $0$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - \frac{x^{2}}{2 {(x^{2} + 12)}^{\frac{1}{2}}} (2 x)}{x^{2} + 12}$

Step 15.2

Multiply $2$ by $- 1$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - 2 \frac{x^{2}}{2 {(x^{2} + 12)}^{\frac{1}{2}}} x}{x^{2} + 12}$

Step 15.3

Combine $- 2$ and $\frac{x^{2}}{2 {(x^{2} + 12)}^{\frac{1}{2}}}$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x + \frac{- 2 x^{2}}{2 {(x^{2} + 12)}^{\frac{1}{2}}} x}{x^{2} + 12}$

Step 15.4

Combine $\frac{- 2 x^{2}}{2 {(x^{2} + 12)}^{\frac{1}{2}}}$ and $x$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x + \frac{- 2 x^{2} x}{2 {(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 16

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

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x + \frac{- 2 (x^{1} x^{2})}{2 {(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 17

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

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x + \frac{- 2 x^{1 + 2}}{2 {(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 18

Add $1$ and $2$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x + \frac{- 2 x^{3}}{2 {(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 19

Factor $2$ out of $- 2 x^{3}$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x + \frac{2 (- x^{3})}{2 {(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 20

Cancel the common factors.

Tap for more steps...

Step 20.1

Factor $2$ out of $2 {(x^{2} + 12)}^{\frac{1}{2}}$ .

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x + \frac{2 (- x^{3})}{2 ({(x^{2} + 12)}^{\frac{1}{2}})}}{x^{2} + 12}$

Step 20.2

Cancel the common factor.

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x + \frac{2 (- x^{3})}{2 {(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 20.3

Rewrite the expression.

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x + \frac{- x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 21

Move the negative in front of the fraction.

$550 \frac{2 {(x^{2} + 12)}^{\frac{1}{2}} x - \frac{x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 22

Combine $2 {(x^{2} + 12)}^{\frac{1}{2}} x$ and $- \frac{x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}}$ using a common denominator.

Tap for more steps...

Step 22.1

Move ${(x^{2} + 12)}^{\frac{1}{2}}$ .

$550 \frac{2 x {(x^{2} + 12)}^{\frac{1}{2}} - \frac{x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 22.2

To write $2 x {(x^{2} + 12)}^{\frac{1}{2}}$ as a fraction with a common denominator, multiply by $\frac{{(x^{2} + 12)}^{\frac{1}{2}}}{{(x^{2} + 12)}^{\frac{1}{2}}}$ .

$550 \frac{\frac{2 x {(x^{2} + 12)}^{\frac{1}{2}} {(x^{2} + 12)}^{\frac{1}{2}}}{{(x^{2} + 12)}^{\frac{1}{2}}} - \frac{x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 22.3

Combine the numerators over the common denominator.

$550 \frac{\frac{2 x {(x^{2} + 12)}^{\frac{1}{2}} {(x^{2} + 12)}^{\frac{1}{2}} - x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 23

Multiply ${(x^{2} + 12)}^{\frac{1}{2}}$ by ${(x^{2} + 12)}^{\frac{1}{2}}$ by adding the exponents.

Tap for more steps...

Step 23.1

Move ${(x^{2} + 12)}^{\frac{1}{2}}$ .

$550 \frac{\frac{2 x ({(x^{2} + 12)}^{\frac{1}{2}} {(x^{2} + 12)}^{\frac{1}{2}}) - x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 23.2

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

$550 \frac{\frac{2 x {(x^{2} + 12)}^{\frac{1}{2} + \frac{1}{2}} - x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 23.3

Combine the numerators over the common denominator.

$550 \frac{\frac{2 x {(x^{2} + 12)}^{\frac{1 + 1}{2}} - x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 23.4

Add $1$ and $1$ .

$550 \frac{\frac{2 x {(x^{2} + 12)}^{\frac{2}{2}} - x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 23.5

Divide $2$ by $2$ .

$550 \frac{\frac{2 x {(x^{2} + 12)}^{1} - x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 24

Simplify $2 x {(x^{2} + 12)}^{1}$ .

$550 \frac{\frac{2 x (x^{2} + 12) - x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$

Step 25

Rewrite $\frac{\frac{2 x (x^{2} + 12) - x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}}}{x^{2} + 12}$ as a product.

$550 (\frac{2 x (x^{2} + 12) - x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}} \cdot \frac{1}{x^{2} + 12})$

Step 26

Multiply $\frac{2 x (x^{2} + 12) - x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}}}$ by $\frac{1}{x^{2} + 12}$ .

$550 \frac{2 x (x^{2} + 12) - x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}} (x^{2} + 12)}$

Step 27

Multiply ${(x^{2} + 12)}^{\frac{1}{2}}$ by $x^{2} + 12$ by adding the exponents.

Tap for more steps...

Step 27.1

Multiply ${(x^{2} + 12)}^{\frac{1}{2}}$ by $x^{2} + 12$ .

Tap for more steps...

Step 27.1.1

Raise $x^{2} + 12$ to the power of $1$ .

$550 \frac{2 x (x^{2} + 12) - x^{3}}{{(x^{2} + 12)}^{\frac{1}{2}} {(x^{2} + 12)}^{1}}$

Step 27.1.2

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

$550 \frac{2 x (x^{2} + 12) - x^{3}}{{(x^{2} + 12)}^{\frac{1}{2} + 1}}$

Step 27.2

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

$550 \frac{2 x (x^{2} + 12) - x^{3}}{{(x^{2} + 12)}^{\frac{1}{2} + \frac{2}{2}}}$

Step 27.3

Combine the numerators over the common denominator.

$550 \frac{2 x (x^{2} + 12) - x^{3}}{{(x^{2} + 12)}^{\frac{1 + 2}{2}}}$

Step 27.4

Add $1$ and $2$ .

$550 \frac{2 x (x^{2} + 12) - x^{3}}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 28

Combine $550$ and $\frac{2 x (x^{2} + 12) - x^{3}}{{(x^{2} + 12)}^{\frac{3}{2}}}$ .

$\frac{550 (2 x (x^{2} + 12) - x^{3})}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 29

Simplify.

Tap for more steps...

Step 29.1

Apply the distributive property.

$\frac{550 (2 x \cdot x^{2} + 2 x \cdot 12 - x^{3})}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 29.2

Apply the distributive property.

$\frac{550 (2 x \cdot x^{2}) + 550 (2 x \cdot 12) + 550 (- x^{3})}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 29.3

Simplify the numerator.

Tap for more steps...

Step 29.3.1

Simplify each term.

Tap for more steps...

Step 29.3.1.1

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

Tap for more steps...

Step 29.3.1.1.1

Move $x^{2}$ .

$\frac{550 (2 (x^{2} x)) + 550 (2 x \cdot 12) + 550 (- x^{3})}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 29.3.1.1.2

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

Tap for more steps...

Step 29.3.1.1.2.1

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

$\frac{550 (2 (x^{2} x^{1})) + 550 (2 x \cdot 12) + 550 (- x^{3})}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 29.3.1.1.2.2

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

$\frac{550 (2 x^{2 + 1}) + 550 (2 x \cdot 12) + 550 (- x^{3})}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 29.3.1.1.3

Add $2$ and $1$ .

$\frac{550 (2 x^{3}) + 550 (2 x \cdot 12) + 550 (- x^{3})}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 29.3.1.2

Multiply $2$ by $550$ .

$\frac{1100 x^{3} + 550 (2 x \cdot 12) + 550 (- x^{3})}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 29.3.1.3

Multiply $12$ by $2$ .

$\frac{1100 x^{3} + 550 (24 x) + 550 (- x^{3})}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 29.3.1.4

Multiply $24$ by $550$ .

$\frac{1100 x^{3} + 13200 x + 550 (- x^{3})}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 29.3.1.5

Multiply $- 1$ by $550$ .

$\frac{1100 x^{3} + 13200 x - 550 x^{3}}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 29.3.2

Subtract $550 x^{3}$ from $1100 x^{3}$ .

$\frac{550 x^{3} + 13200 x}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 29.4

Factor $550 x$ out of $550 x^{3} + 13200 x$ .

Tap for more steps...

Step 29.4.1

Factor $550 x$ out of $550 x^{3}$ .

$\frac{550 x (x^{2}) + 13200 x}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 29.4.2

Factor $550 x$ out of $13200 x$ .

$\frac{550 x (x^{2}) + 550 x (24)}{{(x^{2} + 12)}^{\frac{3}{2}}}$

Step 29.4.3

Factor $550 x$ out of $550 x (x^{2}) + 550 x (24)$ .

$\frac{550 x (x^{2} + 24)}{{(x^{2} + 12)}^{\frac{3}{2}}}$