Algebra Examples

$\frac{1}{6 x {(x - 1)}^{\frac{1}{2}}}$

Step 1

Differentiate using the Constant Multiple Rule.

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Step 1.1

Since $\frac{1}{6}$ is constant with respect to $x$ , the derivative of $\frac{1}{6 x {(x - 1)}^{\frac{1}{2}}}$ with respect to $x$ is $\frac{1}{6} \frac{d}{d x} [\frac{1}{x {(x - 1)}^{\frac{1}{2}}}]$ .

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

Step 1.2

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

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

Step 2

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

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Step 2.1

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

$\frac{1}{6} (\frac{d}{d u_{1}} [{u_{1}}^{- 1}] \frac{d}{d x} [x {(x - 1)}^{\frac{1}{2}}])$

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 $n = - 1$ .

$\frac{1}{6} (- {u_{1}}^{- 2} \frac{d}{d x} [x {(x - 1)}^{\frac{1}{2}}])$

Step 2.3

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

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

Step 3

Combine fractions.

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Step 3.1

Combine $\frac{1}{6}$ and ${(x {(x - 1)}^{\frac{1}{2}})}^{- 2}$ .

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

Step 3.2

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

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

Step 4

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

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

Step 5

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 $g (x) = x - 1$ .

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Step 5.1

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

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

Step 5.2

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

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

Step 5.3

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

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

Step 6

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

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

Step 7

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

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

Step 8

Combine the numerators over the common denominator.

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

Step 9

Simplify the numerator.

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Step 9.1

Multiply $- 1$ by $2$ .

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

Step 9.2

Subtract $2$ from $1$ .

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

Step 10

Combine fractions.

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Step 10.1

Move the negative in front of the fraction.

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

Step 10.2

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

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

Step 10.3

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

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

Step 10.4

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

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

Step 11

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

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

Step 12

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

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

Step 13

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

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

Step 14

Simplify the expression.

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Step 14.1

Add $1$ and $0$ .

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

Step 14.2

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

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

Step 15

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

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

Step 16

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

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

Step 17

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

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

Step 18

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

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

Step 19

Combine the numerators over the common denominator.

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

Step 20

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

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Step 20.1

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

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

Step 20.2

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

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

Step 20.3

Combine the numerators over the common denominator.

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

Step 20.4

Add $1$ and $1$ .

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

Step 20.5

Divide $2$ by $2$ .

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

Step 21

Simplify the expression.

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Step 21.1

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

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

Step 21.2

Move $2$ to the left of $x - 1$ .

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

Step 22

Multiply $\frac{x + 2 (x - 1)}{2 {(x - 1)}^{\frac{1}{2}}}$ by $\frac{1}{6 {(x {(x - 1)}^{\frac{1}{2}})}^{2}}$ .

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

Step 23

Multiply $6$ by $2$ .

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

Step 24

Simplify.

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Step 24.1

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

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

Step 24.2

Apply the distributive property.

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

Step 24.3

Simplify the numerator.

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Step 24.3.1

Multiply $2$ by $- 1$ .

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

Step 24.3.2

Add $x$ and $2 x$ .

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

Step 24.4

Combine terms.

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Step 24.4.1

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

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Step 24.4.1.1

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

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

Step 24.4.1.2

Cancel the common factor of $2$ .

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Step 24.4.1.2.1

Cancel the common factor.

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

Step 24.4.1.2.2

Rewrite the expression.

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

Step 24.4.2

Simplify.

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

Step 24.4.3

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

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

Step 24.4.4

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

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

Step 24.4.5

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

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

Step 24.4.6

Combine the numerators over the common denominator.

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

Step 24.4.7

Add $1$ and $2$ .

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