Calculus Examples

${(1 + \frac{a}{x})}^{b x}$

Step 1

Use the properties of logarithms to simplify the differentiation.

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Step 1.1

Rewrite ${(1 + \frac{a}{x})}^{b x}$ as $e^{\ln ({(1 + \frac{a}{x})}^{b x})}$ .

$\frac{d}{d x} [e^{\ln ({(1 + \frac{a}{x})}^{b x})}]$

Step 1.2

Expand $\ln ({(1 + \frac{a}{x})}^{b x})$ by moving $b x$ outside the logarithm.

$\frac{d}{d x} [e^{b x \ln (1 + \frac{a}{x})}]$

Step 2

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

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Step 2.1

To apply the Chain Rule, set $u_{1}$ as $b x \ln (1 + \frac{a}{x})$ .

$\frac{d}{d u_{1}} [e^{u_{1}}] \frac{d}{d x} [b x \ln (1 + \frac{a}{x})]$

Step 2.2

Differentiate using the Exponential Rule which states that $\frac{d}{d u_{1}} [a^{u_{1}}]$ is $a^{u_{1}} \ln (a)$ where $a$ = $e$ .

$e^{u_{1}} \frac{d}{d x} [b x \ln (1 + \frac{a}{x})]$

Step 2.3

Replace all occurrences of $u_{1}$ with $b x \ln (1 + \frac{a}{x})$ .

$e^{b x \ln (1 + \frac{a}{x})} \frac{d}{d x} [b x \ln (1 + \frac{a}{x})]$

Step 3

Since $b$ is constant with respect to $x$ , the derivative of $b x \ln (1 + \frac{a}{x})$ with respect to $x$ is $b \frac{d}{d x} [x \ln (1 + \frac{a}{x})]$ .

$e^{b x \ln (1 + \frac{a}{x})} (b \frac{d}{d x} [x \ln (1 + \frac{a}{x})])$

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 $g (x) = \ln (1 + \frac{a}{x})$ .

$e^{b x \ln (1 + \frac{a}{x})} (b (x \frac{d}{d x} [\ln (1 + \frac{a}{x})] + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 5

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

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Step 5.1

To apply the Chain Rule, set $u_{2}$ as $1 + \frac{a}{x}$ .

$e^{b x \ln (1 + \frac{a}{x})} (b (x (\frac{d}{d u_{2}} [\ln (u_{2})] \frac{d}{d x} [1 + \frac{a}{x}]) + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 5.2

The derivative of $\ln (u_{2})$ with respect to $u_{2}$ is $\frac{1}{u_{2}}$ .

$e^{b x \ln (1 + \frac{a}{x})} (b (x (\frac{1}{u_{2}} \frac{d}{d x} [1 + \frac{a}{x}]) + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 5.3

Replace all occurrences of $u_{2}$ with $1 + \frac{a}{x}$ .

$e^{b x \ln (1 + \frac{a}{x})} (b (x (\frac{1}{1 + \frac{a}{x}} \frac{d}{d x} [1 + \frac{a}{x}]) + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 6

Differentiate.

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Step 6.1

Combine $\frac{1}{1 + \frac{a}{x}}$ and $x$ .

$e^{b x \ln (1 + \frac{a}{x})} (b (\frac{x}{1 + \frac{a}{x}} \frac{d}{d x} [1 + \frac{a}{x}] + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 6.2

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

$e^{b x \ln (1 + \frac{a}{x})} (b (\frac{x}{1 + \frac{a}{x}} (\frac{d}{d x} [1] + \frac{d}{d x} [\frac{a}{x}]) + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 6.3

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

$e^{b x \ln (1 + \frac{a}{x})} (b (\frac{x}{1 + \frac{a}{x}} (0 + \frac{d}{d x} [\frac{a}{x}]) + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 6.4

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

$e^{b x \ln (1 + \frac{a}{x})} (b (\frac{x}{1 + \frac{a}{x}} \frac{d}{d x} [\frac{a}{x}] + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 6.5

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

$e^{b x \ln (1 + \frac{a}{x})} (b (\frac{x}{1 + \frac{a}{x}} (a \frac{d}{d x} [\frac{1}{x}]) + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 6.6

Combine fractions.

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Step 6.6.1

Combine $a$ and $\frac{x}{1 + \frac{a}{x}}$ .

$e^{b x \ln (1 + \frac{a}{x})} (b (\frac{a x}{1 + \frac{a}{x}} \frac{d}{d x} [\frac{1}{x}] + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 6.6.2

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

$e^{b x \ln (1 + \frac{a}{x})} (b (\frac{a x}{1 + \frac{a}{x}} \frac{d}{d x} [x^{- 1}] + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 6.7

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

$e^{b x \ln (1 + \frac{a}{x})} (b (\frac{a x}{1 + \frac{a}{x}} (- x^{- 2}) + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 6.8

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

$e^{b x \ln (1 + \frac{a}{x})} (b (- \frac{a x \cdot x^{- 2}}{1 + \frac{a}{x}} + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 7

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

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Step 7.1

Move $x^{- 2}$ .

$e^{b x \ln (1 + \frac{a}{x})} (b (- \frac{a (x^{- 2} x)}{1 + \frac{a}{x}} + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 7.2

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

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Step 7.2.1

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

$e^{b x \ln (1 + \frac{a}{x})} (b (- \frac{a (x^{- 2} x^{1})}{1 + \frac{a}{x}} + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 7.2.2

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

$e^{b x \ln (1 + \frac{a}{x})} (b (- \frac{a x^{- 2 + 1}}{1 + \frac{a}{x}} + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 7.3

Add $- 2$ and $1$ .

$e^{b x \ln (1 + \frac{a}{x})} (b (- \frac{a x^{- 1}}{1 + \frac{a}{x}} + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 8

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

$e^{b x \ln (1 + \frac{a}{x})} (b (- \frac{a}{(1 + \frac{a}{x}) x} + \ln (1 + \frac{a}{x}) \frac{d}{d x} [x]))$

Step 9

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

$e^{b x \ln (1 + \frac{a}{x})} (b (- \frac{a}{(1 + \frac{a}{x}) x} + \ln (1 + \frac{a}{x}) \cdot 1))$

Step 10

Multiply $\ln (1 + \frac{a}{x})$ by $1$ .

$e^{b x \ln (1 + \frac{a}{x})} (b (- \frac{a}{(1 + \frac{a}{x}) x} + \ln (1 + \frac{a}{x})))$

Step 11

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

$e^{b x \ln (1 + \frac{a}{x})} (b (- \frac{a}{(1 + \frac{a}{x}) x} + \ln (1 + \frac{a}{x}) \cdot \frac{(1 + \frac{a}{x}) x}{(1 + \frac{a}{x}) x}))$

Step 12

Combine $\ln (1 + \frac{a}{x})$ and $\frac{(1 + \frac{a}{x}) x}{(1 + \frac{a}{x}) x}$ .

$e^{b x \ln (1 + \frac{a}{x})} (b (- \frac{a}{(1 + \frac{a}{x}) x} + \frac{\ln (1 + \frac{a}{x}) ((1 + \frac{a}{x}) x)}{(1 + \frac{a}{x}) x}))$

Step 13

Combine the numerators over the common denominator.

$e^{b x \ln (1 + \frac{a}{x})} (b \frac{- a + \ln (1 + \frac{a}{x}) ((1 + \frac{a}{x}) x)}{(1 + \frac{a}{x}) x})$

Step 14

Combine $b$ and $\frac{- a + \ln (1 + \frac{a}{x}) ((1 + \frac{a}{x}) x)}{(1 + \frac{a}{x}) x}$ .

$e^{b x \ln (1 + \frac{a}{x})} \frac{b (- a + \ln (1 + \frac{a}{x}) ((1 + \frac{a}{x}) x))}{(1 + \frac{a}{x}) x}$

Step 15

Combine $e^{b x \ln (1 + \frac{a}{x})}$ and $\frac{b (- a + \ln (1 + \frac{a}{x}) ((1 + \frac{a}{x}) x))}{(1 + \frac{a}{x}) x}$ .

$\frac{e^{b x \ln (1 + \frac{a}{x})} (b (- a + \ln (1 + \frac{a}{x}) ((1 + \frac{a}{x}) x)))}{(1 + \frac{a}{x}) x}$

Step 16

Simplify.

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Step 16.1

Apply the distributive property.

$\frac{e^{b x \ln (1 + \frac{a}{x})} (b (- a + \ln (1 + \frac{a}{x}) (1 x + \frac{a}{x} x)))}{(1 + \frac{a}{x}) x}$

Step 16.2

Apply the distributive property.

$\frac{e^{b x \ln (1 + \frac{a}{x})} (b (- a) + b (\ln (1 + \frac{a}{x}) (1 x + \frac{a}{x} x)))}{(1 + \frac{a}{x}) x}$

Step 16.3

Apply the distributive property.

$\frac{e^{b x \ln (1 + \frac{a}{x})} (b (- a) + b (\ln (1 + \frac{a}{x}) (1 x + \frac{a}{x} x)))}{1 x + \frac{a}{x} x}$

Step 16.4

Simplify the numerator.

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Step 16.4.1

Simplify each term.

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Step 16.4.1.1

Rewrite using the commutative property of multiplication.

$\frac{e^{b x \ln (1 + \frac{a}{x})} (- b a + b (\ln (1 + \frac{a}{x}) (1 x + \frac{a}{x} x)))}{1 x + \frac{a}{x} x}$

Step 16.4.1.2

Simplify each term.

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Step 16.4.1.2.1

Multiply $x$ by $1$ .

$\frac{e^{b x \ln (1 + \frac{a}{x})} (- b a + b (\ln (1 + \frac{a}{x}) (x + \frac{a}{x} x)))}{1 x + \frac{a}{x} x}$

Step 16.4.1.2.2

Cancel the common factor of $x$ .

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Step 16.4.1.2.2.1

Cancel the common factor.

$\frac{e^{b x \ln (1 + \frac{a}{x})} (- b a + b (\ln (1 + \frac{a}{x}) (x + \frac{a}{x} x)))}{1 x + \frac{a}{x} x}$

Step 16.4.1.2.2.2

Rewrite the expression.

$\frac{e^{b x \ln (1 + \frac{a}{x})} (- b a + b (\ln (1 + \frac{a}{x}) (x + a)))}{1 x + \frac{a}{x} x}$

Step 16.4.1.3

Apply the distributive property.

$\frac{e^{b x \ln (1 + \frac{a}{x})} (- b a + b (\ln (1 + \frac{a}{x}) x + \ln (1 + \frac{a}{x}) a))}{1 x + \frac{a}{x} x}$

Step 16.4.1.4

Apply the distributive property.

$\frac{e^{b x \ln (1 + \frac{a}{x})} (- b a + b \ln (1 + \frac{a}{x}) x + b \ln (1 + \frac{a}{x}) a)}{1 x + \frac{a}{x} x}$

Step 16.4.2

Apply the distributive property.

$\frac{e^{b x \ln (1 + \frac{a}{x})} (- b a) + e^{b x \ln (1 + \frac{a}{x})} (b \ln (1 + \frac{a}{x}) x) + e^{b x \ln (1 + \frac{a}{x})} (b \ln (1 + \frac{a}{x}) a)}{1 x + \frac{a}{x} x}$

Step 16.4.3

Rewrite using the commutative property of multiplication.

$\frac{- e^{b x \ln (1 + \frac{a}{x})} (b a) + e^{b x \ln (1 + \frac{a}{x})} (b \ln (1 + \frac{a}{x}) x) + e^{b x \ln (1 + \frac{a}{x})} (b \ln (1 + \frac{a}{x}) a)}{1 x + \frac{a}{x} x}$

Step 16.4.4

Reorder factors in $- e^{b x \ln (1 + \frac{a}{x})} (b a) + e^{b x \ln (1 + \frac{a}{x})} (b \ln (1 + \frac{a}{x}) x) + e^{b x \ln (1 + \frac{a}{x})} (b \ln (1 + \frac{a}{x}) a)$ .

$\frac{- b a e^{b x \ln (1 + \frac{a}{x})} + b x e^{b x \ln (1 + \frac{a}{x})} \ln (1 + \frac{a}{x}) + b a e^{b x \ln (1 + \frac{a}{x})} \ln (1 + \frac{a}{x})}{1 x + \frac{a}{x} x}$

Step 16.5

Combine terms.

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Step 16.5.1

Multiply $x$ by $1$ .

$\frac{- b a e^{b x \ln (1 + \frac{a}{x})} + b x e^{b x \ln (1 + \frac{a}{x})} \ln (1 + \frac{a}{x}) + b a e^{b x \ln (1 + \frac{a}{x})} \ln (1 + \frac{a}{x})}{x + \frac{a}{x} x}$

Step 16.5.2

Combine $\frac{a}{x}$ and $x$ .

$\frac{- b a e^{b x \ln (1 + \frac{a}{x})} + b x e^{b x \ln (1 + \frac{a}{x})} \ln (1 + \frac{a}{x}) + b a e^{b x \ln (1 + \frac{a}{x})} \ln (1 + \frac{a}{x})}{x + \frac{a x}{x}}$

Step 16.5.3

Cancel the common factor of $x$ .

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Step 16.5.3.1

Cancel the common factor.

$\frac{- b a e^{b x \ln (1 + \frac{a}{x})} + b x e^{b x \ln (1 + \frac{a}{x})} \ln (1 + \frac{a}{x}) + b a e^{b x \ln (1 + \frac{a}{x})} \ln (1 + \frac{a}{x})}{x + \frac{a x}{x}}$

Step 16.5.3.2

Divide $a$ by $1$ .

$\frac{- b a e^{b x \ln (1 + \frac{a}{x})} + b x e^{b x \ln (1 + \frac{a}{x})} \ln (1 + \frac{a}{x}) + b a e^{b x \ln (1 + \frac{a}{x})} \ln (1 + \frac{a}{x})}{x + a}$

Step 16.6

Reorder terms.

$\frac{- e^{b x \ln (1 + \frac{a}{x})} a b + e^{b x \ln (1 + \frac{a}{x})} b x \ln (1 + \frac{a}{x}) + e^{b x \ln (1 + \frac{a}{x})} a b \ln (1 + \frac{a}{x})}{a + x}$

Step 16.7

Simplify the numerator.

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Step 16.7.1

Factor $b$ out of $- e^{b x \ln (1 + \frac{a}{x})} a b + e^{b x \ln (1 + \frac{a}{x})} b x \ln (1 + \frac{a}{x}) + e^{b x \ln (1 + \frac{a}{x})} a b \ln (1 + \frac{a}{x})$ .

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Step 16.7.1.1

Factor $b$ out of $- e^{b x \ln (1 + \frac{a}{x})} a b$ .

$\frac{b (- e^{b x \ln (1 + \frac{a}{x})} a) + e^{b x \ln (1 + \frac{a}{x})} b x \ln (1 + \frac{a}{x}) + e^{b x \ln (1 + \frac{a}{x})} a b \ln (1 + \frac{a}{x})}{a + x}$

Step 16.7.1.2

Factor $b$ out of $e^{b x \ln (1 + \frac{a}{x})} b x \ln (1 + \frac{a}{x})$ .

$\frac{b (- e^{b x \ln (1 + \frac{a}{x})} a) + b (e^{b x \ln (1 + \frac{a}{x})} x \ln (1 + \frac{a}{x})) + e^{b x \ln (1 + \frac{a}{x})} a b \ln (1 + \frac{a}{x})}{a + x}$

Step 16.7.1.3

Factor $b$ out of $e^{b x \ln (1 + \frac{a}{x})} a b \ln (1 + \frac{a}{x})$ .

$\frac{b (- e^{b x \ln (1 + \frac{a}{x})} a) + b (e^{b x \ln (1 + \frac{a}{x})} x \ln (1 + \frac{a}{x})) + b (e^{b x \ln (1 + \frac{a}{x})} a \ln (1 + \frac{a}{x}))}{a + x}$

Step 16.7.1.4

Factor $b$ out of $b (- e^{b x \ln (1 + \frac{a}{x})} a) + b (e^{b x \ln (1 + \frac{a}{x})} x \ln (1 + \frac{a}{x}))$ .

$\frac{b (- e^{b x \ln (1 + \frac{a}{x})} a + e^{b x \ln (1 + \frac{a}{x})} x \ln (1 + \frac{a}{x})) + b (e^{b x \ln (1 + \frac{a}{x})} a \ln (1 + \frac{a}{x}))}{a + x}$

Step 16.7.1.5

Factor $b$ out of $b (- e^{b x \ln (1 + \frac{a}{x})} a + e^{b x \ln (1 + \frac{a}{x})} x \ln (1 + \frac{a}{x})) + b (e^{b x \ln (1 + \frac{a}{x})} a \ln (1 + \frac{a}{x}))$ .

$\frac{b (- e^{b x \ln (1 + \frac{a}{x})} a + e^{b x \ln (1 + \frac{a}{x})} x \ln (1 + \frac{a}{x}) + e^{b x \ln (1 + \frac{a}{x})} a \ln (1 + \frac{a}{x}))}{a + x}$

Step 16.7.2

Factor $e^{b x \ln (1 + \frac{a}{x})}$ out of $- e^{b x \ln (1 + \frac{a}{x})} a + e^{b x \ln (1 + \frac{a}{x})} x \ln (1 + \frac{a}{x}) + e^{b x \ln (1 + \frac{a}{x})} a \ln (1 + \frac{a}{x})$ .

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Step 16.7.2.1

Reorder the expression.

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Step 16.7.2.1.1

Reorder $1$ and $\frac{a}{x}$ .

$\frac{b (- e^{b x \ln (\frac{a}{x} + 1)} a + e^{b x \ln (1 + \frac{a}{x})} x \ln (1 + \frac{a}{x}) + e^{b x \ln (1 + \frac{a}{x})} a \ln (1 + \frac{a}{x}))}{a + x}$

Step 16.7.2.1.2

Move $e^{b x \ln (\frac{a}{x} + 1)}$ .

$\frac{b (- a e^{b x \ln (\frac{a}{x} + 1)} + e^{b x \ln (1 + \frac{a}{x})} x \ln (1 + \frac{a}{x}) + e^{b x \ln (1 + \frac{a}{x})} a \ln (1 + \frac{a}{x}))}{a + x}$

Step 16.7.2.1.3

Reorder $1$ and $\frac{a}{x}$ .

$\frac{b (- a e^{b x \ln (\frac{a}{x} + 1)} + e^{b x \ln (\frac{a}{x} + 1)} x \ln (1 + \frac{a}{x}) + e^{b x \ln (1 + \frac{a}{x})} a \ln (1 + \frac{a}{x}))}{a + x}$

Step 16.7.2.1.4

Reorder $1$ and $\frac{a}{x}$ .

$\frac{b (- a e^{b x \ln (\frac{a}{x} + 1)} + e^{b x \ln (\frac{a}{x} + 1)} x \ln (\frac{a}{x} + 1) + e^{b x \ln (1 + \frac{a}{x})} a \ln (1 + \frac{a}{x}))}{a + x}$

Step 16.7.2.1.5

Reorder $e^{b x \ln (\frac{a}{x} + 1)}$ and $x$ .

$\frac{b (- a e^{b x \ln (\frac{a}{x} + 1)} + x e^{b x \ln (\frac{a}{x} + 1)} \ln (\frac{a}{x} + 1) + e^{b x \ln (1 + \frac{a}{x})} a \ln (1 + \frac{a}{x}))}{a + x}$

Step 16.7.2.1.6

Reorder $1$ and $\frac{a}{x}$ .

$\frac{b (- a e^{b x \ln (\frac{a}{x} + 1)} + x e^{b x \ln (\frac{a}{x} + 1)} \ln (\frac{a}{x} + 1) + e^{b x \ln (\frac{a}{x} + 1)} a \ln (1 + \frac{a}{x}))}{a + x}$

Step 16.7.2.1.7

Reorder $1$ and $\frac{a}{x}$ .

$\frac{b (- a e^{b x \ln (\frac{a}{x} + 1)} + x e^{b x \ln (\frac{a}{x} + 1)} \ln (\frac{a}{x} + 1) + e^{b x \ln (\frac{a}{x} + 1)} a \ln (\frac{a}{x} + 1))}{a + x}$

Step 16.7.2.1.8

Reorder $e^{b x \ln (\frac{a}{x} + 1)}$ and $a$ .

$\frac{b (- a e^{b x \ln (\frac{a}{x} + 1)} + x e^{b x \ln (\frac{a}{x} + 1)} \ln (\frac{a}{x} + 1) + a e^{b x \ln (\frac{a}{x} + 1)} \ln (\frac{a}{x} + 1))}{a + x}$

Step 16.7.2.2

Factor $e^{b x \ln (1 + \frac{a}{x})}$ out of $- a e^{b x \ln (\frac{a}{x} + 1)}$ .

$\frac{b (e^{b x \ln (\frac{a}{x} + 1)} (- a) + x e^{b x \ln (\frac{a}{x} + 1)} \ln (\frac{a}{x} + 1) + a e^{b x \ln (\frac{a}{x} + 1)} \ln (\frac{a}{x} + 1))}{a + x}$

Step 16.7.2.3

Factor $e^{b x \ln (1 + \frac{a}{x})}$ out of $x e^{b x \ln (\frac{a}{x} + 1)} \ln (\frac{a}{x} + 1)$ .

$\frac{b (e^{b x \ln (\frac{a}{x} + 1)} (- a) + e^{b x \ln (\frac{a}{x} + 1)} (x \ln (\frac{a}{x} + 1)) + a e^{b x \ln (\frac{a}{x} + 1)} \ln (\frac{a}{x} + 1))}{a + x}$

Step 16.7.2.4

Factor $e^{b x \ln (1 + \frac{a}{x})}$ out of $a e^{b x \ln (\frac{a}{x} + 1)} \ln (\frac{a}{x} + 1)$ .

$\frac{b (e^{b x \ln (\frac{a}{x} + 1)} (- a) + e^{b x \ln (\frac{a}{x} + 1)} (x \ln (\frac{a}{x} + 1)) + e^{b x \ln (\frac{a}{x} + 1)} (a \ln (\frac{a}{x} + 1)))}{a + x}$

Step 16.7.2.5

Factor $e^{b x \ln (\frac{a}{x} + 1)}$ out of $e^{b x \ln (\frac{a}{x} + 1)} (- a) + e^{b x \ln (\frac{a}{x} + 1)} (x \ln (\frac{a}{x} + 1))$ .

$\frac{b (e^{b x \ln (\frac{a}{x} + 1)} (- a + x \ln (\frac{a}{x} + 1)) + e^{b x \ln (\frac{a}{x} + 1)} (a \ln (\frac{a}{x} + 1)))}{a + x}$

Step 16.7.2.6

Factor $e^{b x \ln (\frac{a}{x} + 1)}$ out of $e^{b x \ln (\frac{a}{x} + 1)} (- a + x \ln (\frac{a}{x} + 1)) + e^{b x \ln (\frac{a}{x} + 1)} (a \ln (\frac{a}{x} + 1))$ .

$\frac{b (e^{b x \ln (\frac{a}{x} + 1)} (- a + x \ln (\frac{a}{x} + 1) + a \ln (\frac{a}{x} + 1)))}{a + x}$

$\frac{b e^{b x \ln (\frac{a}{x} + 1)} (- a + x \ln (\frac{a}{x} + 1) + a \ln (\frac{a}{x} + 1))}{a + x}$

Step 16.7.3

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

$\frac{b e^{b x \ln (\frac{a}{x} + \frac{x}{x})} (- a + x \ln (\frac{a}{x} + 1) + a \ln (\frac{a}{x} + 1))}{a + x}$

Step 16.7.4

Combine the numerators over the common denominator.

$\frac{b e^{b x \ln (\frac{a + x}{x})} (- a + x \ln (\frac{a}{x} + 1) + a \ln (\frac{a}{x} + 1))}{a + x}$

Step 16.7.5

Simplify each term.

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Step 16.7.5.1

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

$\frac{b e^{b x \ln (\frac{a + x}{x})} (- a + x \ln (\frac{a}{x} + \frac{x}{x}) + a \ln (\frac{a}{x} + 1))}{a + x}$

Step 16.7.5.2

Combine the numerators over the common denominator.

$\frac{b e^{b x \ln (\frac{a + x}{x})} (- a + x \ln (\frac{a + x}{x}) + a \ln (\frac{a}{x} + 1))}{a + x}$

Step 16.7.5.3

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

$\frac{b e^{b x \ln (\frac{a + x}{x})} (- a + x \ln (\frac{a + x}{x}) + a \ln (\frac{a}{x} + \frac{x}{x}))}{a + x}$

Step 16.7.5.4

Combine the numerators over the common denominator.

$\frac{b e^{b x \ln (\frac{a + x}{x})} (- a + x \ln (\frac{a + x}{x}) + a \ln (\frac{a + x}{x}))}{a + x}$

Step 16.8

Factor $- 1$ out of $- a$ .

$\frac{b e^{b x \ln (\frac{a + x}{x})} (- (a) + x \ln (\frac{a + x}{x}) + a \ln (\frac{a + x}{x}))}{a + x}$

Step 16.9

Factor $- 1$ out of $x \ln (\frac{a + x}{x})$ .

$\frac{b e^{b x \ln (\frac{a + x}{x})} (- (a) - (- x \ln (\frac{a + x}{x})) + a \ln (\frac{a + x}{x}))}{a + x}$

Step 16.10

Factor $- 1$ out of $- (a) - (- x \ln (\frac{a + x}{x}))$ .

$\frac{b e^{b x \ln (\frac{a + x}{x})} (- (a - x \ln (\frac{a + x}{x})) + a \ln (\frac{a + x}{x}))}{a + x}$

Step 16.11

Factor $- 1$ out of $a \ln (\frac{a + x}{x})$ .

$\frac{b e^{b x \ln (\frac{a + x}{x})} (- (a - x \ln (\frac{a + x}{x})) - (- a \ln (\frac{a + x}{x})))}{a + x}$

Step 16.12

Factor $- 1$ out of $- (a - x \ln (\frac{a + x}{x})) - (- a \ln (\frac{a + x}{x}))$ .

$\frac{b e^{b x \ln (\frac{a + x}{x})} (- (a - x \ln (\frac{a + x}{x}) - a \ln (\frac{a + x}{x})))}{a + x}$

Step 16.13

Rewrite $- (a - x \ln (\frac{a + x}{x}) - a \ln (\frac{a + x}{x}))$ as $- 1 (a - x \ln (\frac{a + x}{x}) - a \ln (\frac{a + x}{x}))$ .

$\frac{b e^{b x \ln (\frac{a + x}{x})} (- 1 (a - x \ln (\frac{a + x}{x}) - a \ln (\frac{a + x}{x})))}{a + x}$

Step 16.14

Move the negative in front of the fraction.

$- \frac{(b e^{b x \ln (\frac{a + x}{x})}) (a - x \ln (\frac{a + x}{x}) - a \ln (\frac{a + x}{x}))}{a + x}$

Step 16.15

Reorder factors in $- \frac{(b e^{b x \ln (\frac{a + x}{x})}) (a - x \ln (\frac{a + x}{x}) - a \ln (\frac{a + x}{x}))}{a + x}$ .

$- \frac{b e^{b x \ln (\frac{a + x}{x})} (a - x \ln (\frac{a + x}{x}) - a \ln (\frac{a + x}{x}))}{a + x}$