Calculus Examples

$y = x \arcsin (x) + \sqrt{1 - x^{2}}$

Step 1

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

$y = x \arcsin (x) + {(1 - x^{2})}^{\frac{1}{2}}$

Step 2

Differentiate both sides of the equation.

$\frac{d}{d x} (y) = \frac{d}{d x} (x \arcsin (x) + {(1 - x^{2})}^{\frac{1}{2}})$

Step 3

The derivative of $y$ with respect to $x$ is $y'$ .

$y'$

Step 4

Differentiate the right side of the equation.

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Step 4.1

By the Sum Rule, the derivative of $x \arcsin (x) + {(1 - x^{2})}^{\frac{1}{2}}$ with respect to $x$ is $\frac{d}{d x} [x \arcsin (x)] + \frac{d}{d x} [{(1 - x^{2})}^{\frac{1}{2}}]$ .

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

Step 4.2

Evaluate $\frac{d}{d x} [x \arcsin (x)]$ .

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Step 4.2.1

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = x$ and $g (x) = \arcsin (x)$ .

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

Step 4.2.2

The derivative of $\arcsin (x)$ with respect to $x$ is $\frac{1}{\sqrt{1 - x^{2}}}$ .

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

Step 4.2.3

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

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

Step 4.2.4

Combine $x$ and $\frac{1}{\sqrt{1 - x^{2}}}$ .

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

Step 4.2.5

Multiply $\arcsin (x)$ by $1$ .

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

Step 4.3

Evaluate $\frac{d}{d x} [{(1 - x^{2})}^{\frac{1}{2}}]$ .

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Step 4.3.1

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 $g (x) = 1 - x^{2}$ .

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Step 4.3.1.1

To apply the Chain Rule, set $u$ as $1 - x^{2}$ .

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

Step 4.3.1.2

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

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

Step 4.3.1.3

Replace all occurrences of $u$ with $1 - x^{2}$ .

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

Step 4.3.2

By the Sum Rule, the derivative of $1 - x^{2}$ with respect to $x$ is $\frac{d}{d x} [1] + \frac{d}{d x} [- x^{2}]$ .

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

Step 4.3.3

Since $1$ is constant with respect to $x$ , the derivative of $1$ with respect to $x$ is $0$ .

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{1}{2} {(1 - x^{2})}^{\frac{1}{2} - 1} (0 + \frac{d}{d x} [- x^{2}])$

Step 4.3.4

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

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{1}{2} {(1 - x^{2})}^{\frac{1}{2} - 1} (0 - \frac{d}{d x} [x^{2}])$

Step 4.3.5

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

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{1}{2} {(1 - x^{2})}^{\frac{1}{2} - 1} (0 - (2 x))$

Step 4.3.6

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

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{1}{2} {(1 - x^{2})}^{\frac{1}{2} - 1 \cdot \frac{2}{2}} (0 - (2 x))$

Step 4.3.7

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

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{1}{2} {(1 - x^{2})}^{\frac{1}{2} + \frac{- 1 \cdot 2}{2}} (0 - (2 x))$

Step 4.3.8

Combine the numerators over the common denominator.

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{1}{2} {(1 - x^{2})}^{\frac{1 - 1 \cdot 2}{2}} (0 - (2 x))$

Step 4.3.9

Simplify the numerator.

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Step 4.3.9.1

Multiply $- 1$ by $2$ .

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{1}{2} {(1 - x^{2})}^{\frac{1 - 2}{2}} (0 - (2 x))$

Step 4.3.9.2

Subtract $2$ from $1$ .

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{1}{2} {(1 - x^{2})}^{\frac{- 1}{2}} (0 - (2 x))$

Step 4.3.10

Move the negative in front of the fraction.

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{1}{2} {(1 - x^{2})}^{- \frac{1}{2}} (0 - (2 x))$

Step 4.3.11

Multiply $2$ by $- 1$ .

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{1}{2} {(1 - x^{2})}^{- \frac{1}{2}} (0 - 2 x)$

Step 4.3.12

Subtract $2 x$ from $0$ .

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{1}{2} {(1 - x^{2})}^{- \frac{1}{2}} (- 2 x)$

Step 4.3.13

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

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{{(1 - x^{2})}^{- \frac{1}{2}}}{2} (- 2 x)$

Step 4.3.14

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

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{- 2 {(1 - x^{2})}^{- \frac{1}{2}}}{2} x$

Step 4.3.15

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

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{- 2 {(1 - x^{2})}^{- \frac{1}{2}} x}{2}$

Step 4.3.16

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

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{- 2 x}{2 {(1 - x^{2})}^{\frac{1}{2}}}$

Step 4.3.17

Factor $2$ out of $- 2 x$ .

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{2 (- x)}{2 {(1 - x^{2})}^{\frac{1}{2}}}$

Step 4.3.18

Cancel the common factors.

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Step 4.3.18.1

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

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{2 (- x)}{2 ({(1 - x^{2})}^{\frac{1}{2}})}$

Step 4.3.18.2

Cancel the common factor.

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{2 (- x)}{2 {(1 - x^{2})}^{\frac{1}{2}}}$

Step 4.3.18.3

Rewrite the expression.

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) + \frac{- x}{{(1 - x^{2})}^{\frac{1}{2}}}$

Step 4.3.19

Move the negative in front of the fraction.

$\frac{x}{\sqrt{1 - x^{2}}} + \arcsin (x) - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}}$

Step 4.4

Simplify.

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Step 4.4.1

Reorder terms.

$\frac{x}{\sqrt{1 - x^{2}}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.2

Simplify each term.

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Step 4.4.2.1

Simplify the denominator.

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Step 4.4.2.1.1

Rewrite $1$ as $1^{2}$ .

$\frac{x}{\sqrt{1^{2} - x^{2}}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.2.1.2

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - b^{2} = (a + b) (a - b)$ where $a = 1$ and $b = x$ .

$\frac{x}{\sqrt{(1 + x) (1 - x)}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.2.2

Multiply $\frac{x}{\sqrt{(1 + x) (1 - x)}}$ by $\frac{\sqrt{(1 + x) (1 - x)}}{\sqrt{(1 + x) (1 - x)}}$ .

$\frac{x}{\sqrt{(1 + x) (1 - x)}} \cdot \frac{\sqrt{(1 + x) (1 - x)}}{\sqrt{(1 + x) (1 - x)}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.2.3

Combine and simplify the denominator.

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Step 4.4.2.3.1

Multiply $\frac{x}{\sqrt{(1 + x) (1 - x)}}$ by $\frac{\sqrt{(1 + x) (1 - x)}}{\sqrt{(1 + x) (1 - x)}}$ .

$\frac{x \sqrt{(1 + x) (1 - x)}}{\sqrt{(1 + x) (1 - x)} \sqrt{(1 + x) (1 - x)}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.2.3.2

Raise $\sqrt{(1 + x) (1 - x)}$ to the power of $1$ .

$\frac{x \sqrt{(1 + x) (1 - x)}}{{\sqrt{(1 + x) (1 - x)}}^{1} \sqrt{(1 + x) (1 - x)}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.2.3.3

Raise $\sqrt{(1 + x) (1 - x)}$ to the power of $1$ .

$\frac{x \sqrt{(1 + x) (1 - x)}}{{\sqrt{(1 + x) (1 - x)}}^{1} {\sqrt{(1 + x) (1 - x)}}^{1}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.2.3.4

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

$\frac{x \sqrt{(1 + x) (1 - x)}}{{\sqrt{(1 + x) (1 - x)}}^{1 + 1}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.2.3.5

Add $1$ and $1$ .

$\frac{x \sqrt{(1 + x) (1 - x)}}{{\sqrt{(1 + x) (1 - x)}}^{2}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.2.3.6

Rewrite ${\sqrt{(1 + x) (1 - x)}}^{2}$ as $(1 + x) (1 - x)$ .

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Step 4.4.2.3.6.1

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

$\frac{x \sqrt{(1 + x) (1 - x)}}{{({((1 + x) (1 - x))}^{\frac{1}{2}})}^{2}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.2.3.6.2

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

$\frac{x \sqrt{(1 + x) (1 - x)}}{{((1 + x) (1 - x))}^{\frac{1}{2} \cdot 2}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.2.3.6.3

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

$\frac{x \sqrt{(1 + x) (1 - x)}}{{((1 + x) (1 - x))}^{\frac{2}{2}}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.2.3.6.4

Cancel the common factor of $2$ .

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Step 4.4.2.3.6.4.1

Cancel the common factor.

$\frac{x \sqrt{(1 + x) (1 - x)}}{{((1 + x) (1 - x))}^{\frac{2}{2}}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.2.3.6.4.2

Rewrite the expression.

$\frac{x \sqrt{(1 + x) (1 - x)}}{{((1 + x) (1 - x))}^{1}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.2.3.6.5

Simplify.

$\frac{x \sqrt{(1 + x) (1 - x)}}{(1 + x) (1 - x)} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.3

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

$\frac{x \sqrt{(1 + x) (1 - x)}}{(1 + x) (1 - x)} \cdot \frac{{(1 - x^{2})}^{\frac{1}{2}}}{{(1 - x^{2})}^{\frac{1}{2}}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} + \arcsin (x)$

Step 4.4.4

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

$\frac{x \sqrt{(1 + x) (1 - x)}}{(1 + x) (1 - x)} \cdot \frac{{(1 - x^{2})}^{\frac{1}{2}}}{{(1 - x^{2})}^{\frac{1}{2}}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} \cdot \frac{(1 + x) (1 - x)}{(1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.5

Write each expression with a common denominator of $(1 + x) (1 - x) {(1 - x^{2})}^{\frac{1}{2}}$ , by multiplying each by an appropriate factor of $1$ .

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Step 4.4.5.1

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

$\frac{x \sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}}}{(1 + x) (1 - x) {(1 - x^{2})}^{\frac{1}{2}}} - \frac{x}{{(1 - x^{2})}^{\frac{1}{2}}} \cdot \frac{(1 + x) (1 - x)}{(1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.5.2

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

$\frac{x \sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}}}{(1 + x) (1 - x) {(1 - x^{2})}^{\frac{1}{2}}} - \frac{x ((1 + x) (1 - x))}{{(1 - x^{2})}^{\frac{1}{2}} ((1 + x) (1 - x))} + \arcsin (x)$

Step 4.4.5.3

Reorder the factors of $(1 + x) (1 - x) {(1 - x^{2})}^{\frac{1}{2}}$ .

$\frac{x \sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}}}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} - \frac{x ((1 + x) (1 - x))}{{(1 - x^{2})}^{\frac{1}{2}} ((1 + x) (1 - x))} + \arcsin (x)$

Step 4.4.5.4

Reorder the factors of ${(1 - x^{2})}^{\frac{1}{2}} ((1 + x) (1 - x))$ .

$\frac{x \sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}}}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} - \frac{x ((1 + x) (1 - x))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.6

Combine the numerators over the common denominator.

$\frac{x \sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - x ((1 + x) (1 - x))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7

Simplify the numerator.

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Step 4.4.7.1

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

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Step 4.4.7.1.1

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

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}}) - x ((1 + x) (1 - x))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.1.2

Factor $x$ out of $- x ((1 + x) (1 - x))$ .

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}}) + x (- ((1 + x) (1 - x)))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.1.3

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

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - ((1 + x) (1 - x)))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.2

Expand $(1 + x) (1 - x)$ using the FOIL Method.

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Step 4.4.7.2.1

Apply the distributive property.

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - (1 (1 - x) + x (1 - x)))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.2.2

Apply the distributive property.

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - (1 \cdot 1 + 1 (- x) + x (1 - x)))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.2.3

Apply the distributive property.

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - (1 \cdot 1 + 1 (- x) + x \cdot 1 + x (- x)))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.3

Simplify and combine like terms.

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Step 4.4.7.3.1

Simplify each term.

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Step 4.4.7.3.1.1

Multiply $1$ by $1$ .

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - (1 + 1 (- x) + x \cdot 1 + x (- x)))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.3.1.2

Multiply $- x$ by $1$ .

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - (1 - x + x \cdot 1 + x (- x)))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.3.1.3

Multiply $x$ by $1$ .

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - (1 - x + x + x (- x)))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.3.1.4

Rewrite using the commutative property of multiplication.

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - (1 - x + x - x \cdot x))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.3.1.5

Multiply $x$ by $x$ by adding the exponents.

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Step 4.4.7.3.1.5.1

Move $x$ .

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - (1 - x + x - (x \cdot x)))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.3.1.5.2

Multiply $x$ by $x$ .

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - (1 - x + x - x^{2}))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.3.2

Add $- x$ and $x$ .

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - (1 + 0 - x^{2}))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.3.3

Add $1$ and $0$ .

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - (1 - x^{2}))}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.4

Apply the distributive property.

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - 1 \cdot 1 - - x^{2})}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.5

Multiply $- 1$ by $1$ .

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - 1 - - x^{2})}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.6

Multiply $- - x^{2}$ .

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Step 4.4.7.6.1

Multiply $- 1$ by $- 1$ .

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - 1 + 1 x^{2})}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.7.6.2

Multiply $x^{2}$ by $1$ .

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - 1 + x^{2})}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x)$

Step 4.4.8

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

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - 1 + x^{2})}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \arcsin (x) \cdot \frac{(1 + x) (1 - x) {(1 - x^{2})}^{\frac{1}{2}}}{(1 + x) (1 - x) {(1 - x^{2})}^{\frac{1}{2}}}$

Step 4.4.9

Write each expression with a common denominator of $(1 + x) (1 - x) {(1 - x^{2})}^{\frac{1}{2}}$ , by multiplying each by an appropriate factor of $1$ .

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Step 4.4.9.1

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

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - 1 + x^{2})}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)} + \frac{\arcsin (x) ((1 + x) (1 - x) {(1 - x^{2})}^{\frac{1}{2}})}{(1 + x) (1 - x) {(1 - x^{2})}^{\frac{1}{2}}}$

Step 4.4.9.2

Reorder the factors of $(1 + x) (1 - x) {(1 - x^{2})}^{\frac{1}{2}}$ .

Step 4.4.10

Combine the numerators over the common denominator.

$\frac{x (\sqrt{(1 + x) (1 - x)} {(1 - x^{2})}^{\frac{1}{2}} - 1 + x^{2}) + \arcsin (x) ((1 + x) (1 - x) {(1 - x^{2})}^{\frac{1}{2}})}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)}$

Step 4.4.11

Simplify the numerator.

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Step 4.4.11.1

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

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

Step 4.4.11.2

Simplify each term.

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Step 4.4.11.2.1

Expand $(1 + x) (1 - x)$ using the FOIL Method.

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Step 4.4.11.2.1.1

Apply the distributive property.

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

Step 4.4.11.2.1.2

Apply the distributive property.

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

Step 4.4.11.2.1.3

Apply the distributive property.

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

Step 4.4.11.2.2

Simplify and combine like terms.

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Step 4.4.11.2.2.1

Simplify each term.

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Step 4.4.11.2.2.1.1

Multiply $1$ by $1$ .

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

Step 4.4.11.2.2.1.2

Multiply $- x$ by $1$ .

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

Step 4.4.11.2.2.1.3

Multiply $x$ by $1$ .

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

Step 4.4.11.2.2.1.4

Rewrite using the commutative property of multiplication.

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

Step 4.4.11.2.2.1.5

Multiply $x$ by $x$ by adding the exponents.

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Step 4.4.11.2.2.1.5.1

Move $x$ .

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

Step 4.4.11.2.2.1.5.2

Multiply $x$ by $x$ .

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

Step 4.4.11.2.2.2

Add $- x$ and $x$ .

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

Step 4.4.11.2.2.3

Add $1$ and $0$ .

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

Step 4.4.11.2.3

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

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Step 4.4.11.2.3.1

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

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

Step 4.4.11.2.3.2

Combine the numerators over the common denominator.

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

Step 4.4.11.2.3.3

Add $1$ and $1$ .

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

Step 4.4.11.2.3.4

Divide $2$ by $2$ .

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

Step 4.4.11.2.4

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

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

Step 4.4.11.3

Combine the opposite terms in $1 - x^{2} - 1 + x^{2}$ .

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Step 4.4.11.3.1

Subtract $1$ from $1$ .

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

Step 4.4.11.3.2

Add $- x^{2}$ and $0$ .

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

Step 4.4.11.3.3

Add $- x^{2}$ and $x^{2}$ .

$\frac{x \cdot 0 + \arcsin (x) ((1 + x) (1 - x) {(1 - x^{2})}^{\frac{1}{2}})}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)}$

Step 4.4.11.4

Multiply $x$ by $0$ .

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

Step 4.4.11.5

Expand $(1 + x) (1 - x)$ using the FOIL Method.

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Step 4.4.11.5.1

Apply the distributive property.

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

Step 4.4.11.5.2

Apply the distributive property.

$\frac{0 + \arcsin (x) ((1 \cdot 1 + 1 (- x) + x (1 - x)) {(1 - x^{2})}^{\frac{1}{2}})}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)}$

Step 4.4.11.5.3

Apply the distributive property.

$\frac{0 + \arcsin (x) ((1 \cdot 1 + 1 (- x) + x \cdot 1 + x (- x)) {(1 - x^{2})}^{\frac{1}{2}})}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)}$

Step 4.4.11.6

Simplify and combine like terms.

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Step 4.4.11.6.1

Simplify each term.

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Step 4.4.11.6.1.1

Multiply $1$ by $1$ .

$\frac{0 + \arcsin (x) ((1 + 1 (- x) + x \cdot 1 + x (- x)) {(1 - x^{2})}^{\frac{1}{2}})}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)}$

Step 4.4.11.6.1.2

Multiply $- x$ by $1$ .

$\frac{0 + \arcsin (x) ((1 - x + x \cdot 1 + x (- x)) {(1 - x^{2})}^{\frac{1}{2}})}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)}$

Step 4.4.11.6.1.3

Multiply $x$ by $1$ .

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

Step 4.4.11.6.1.4

Rewrite using the commutative property of multiplication.

$\frac{0 + \arcsin (x) ((1 - x + x - x \cdot x) {(1 - x^{2})}^{\frac{1}{2}})}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)}$

Step 4.4.11.6.1.5

Multiply $x$ by $x$ by adding the exponents.

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Step 4.4.11.6.1.5.1

Move $x$ .

$\frac{0 + \arcsin (x) ((1 - x + x - (x \cdot x)) {(1 - x^{2})}^{\frac{1}{2}})}{{(1 - x^{2})}^{\frac{1}{2}} (1 + x) (1 - x)}$

Step 4.4.11.6.1.5.2

Multiply $x$ by $x$ .

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

Step 4.4.11.6.2

Add $- x$ and $x$ .

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

Step 4.4.11.6.3

Add $1$ and $0$ .

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

Step 4.4.11.7

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

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Step 4.4.11.7.1

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

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Step 4.4.11.7.1.1

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

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

Step 4.4.11.7.1.2

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

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

Step 4.4.11.7.2

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

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

Step 4.4.11.7.3

Combine the numerators over the common denominator.

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

Step 4.4.11.7.4

Add $2$ and $1$ .

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

Step 4.4.11.8

Add $0$ and $\arcsin (x) {(1 - x^{2})}^{\frac{3}{2}}$ .

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

Step 4.4.12

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

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

Step 4.4.13

Simplify the numerator.

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Step 4.4.13.1

Multiply ${(1 - x^{2})}^{\frac{3}{2}}$ by ${(1 - x^{2})}^{- \frac{1}{2}}$ by adding the exponents.

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Step 4.4.13.1.1

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

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

Step 4.4.13.1.2

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

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

Step 4.4.13.1.3

Combine the numerators over the common denominator.

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

Step 4.4.13.1.4

Add $- 1$ and $3$ .

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

Step 4.4.13.1.5

Divide $2$ by $2$ .

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

Step 4.4.13.2

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

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

Step 4.4.14

Simplify the numerator.

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Step 4.4.14.1

Rewrite $1$ as $1^{2}$ .

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

Step 4.4.14.2

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - b^{2} = (a + b) (a - b)$ where $a = 1$ and $b = x$ .

$\frac{\arcsin (x) (1 + x) (1 - x)}{(1 + x) (1 - x)}$

Step 4.4.15

Cancel the common factor of $1 + x$ .

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Step 4.4.15.1

Cancel the common factor.

$\frac{\arcsin (x) (1 + x) (1 - x)}{(1 + x) (1 - x)}$

Step 4.4.15.2

Rewrite the expression.

$\frac{\arcsin (x) (1 - x)}{1 - x}$

Step 4.4.16

Cancel the common factor of $1 - x$ .

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Step 4.4.16.1

Cancel the common factor.

$\frac{\arcsin (x) (1 - x)}{1 - x}$

Step 4.4.16.2

Divide $\arcsin (x)$ by $1$ .

$\arcsin (x)$

Step 5

Reform the equation by setting the left side equal to the right side.

$y' = \arcsin (x)$

Step 6

Replace $y'$ with $\frac{d y}{d x}$ .

$\frac{d y}{d x} = \arcsin (x)$