Calculus Examples

$k (x) = x^{\frac{3}{2}} \cdot e^{2 x}$

Step 1

Find the first derivative of the function.

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Step 1.1

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 $f (x) = x^{\frac{3}{2}}$ and $g (x) = e^{2 x}$ .

$x^{\frac{3}{2}} \frac{d}{d x} [e^{2 x}] + e^{2 x} \frac{d}{d x} [x^{\frac{3}{2}}]$

Step 1.2

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 $g (x) = 2 x$ .

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Step 1.2.1

To apply the Chain Rule, set $u$ as $2 x$ .

$x^{\frac{3}{2}} (\frac{d}{d u} [e^{u}] \frac{d}{d x} [2 x]) + e^{2 x} \frac{d}{d x} [x^{\frac{3}{2}}]$

Step 1.2.2

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

$x^{\frac{3}{2}} (e^{u} \frac{d}{d x} [2 x]) + e^{2 x} \frac{d}{d x} [x^{\frac{3}{2}}]$

Step 1.2.3

Replace all occurrences of $u$ with $2 x$ .

$x^{\frac{3}{2}} (e^{2 x} \frac{d}{d x} [2 x]) + e^{2 x} \frac{d}{d x} [x^{\frac{3}{2}}]$

Step 1.3

Differentiate.

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Step 1.3.1

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

$x^{\frac{3}{2}} (e^{2 x} (2 \frac{d}{d x} [x])) + e^{2 x} \frac{d}{d x} [x^{\frac{3}{2}}]$

Step 1.3.2

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

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

Step 1.3.3

Simplify the expression.

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Step 1.3.3.1

Multiply $2$ by $1$ .

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

Step 1.3.3.2

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

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

Step 1.3.4

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = \frac{3}{2}$ .

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

Step 1.4

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

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

Step 1.5

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

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

Step 1.6

Combine the numerators over the common denominator.

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

Step 1.7

Simplify the numerator.

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Step 1.7.1

Multiply $- 1$ by $2$ .

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

Step 1.7.2

Subtract $2$ from $3$ .

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

Step 1.8

Combine $\frac{3}{2}$ and $x^{\frac{1}{2}}$ .

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

Step 1.9

Combine $e^{2 x}$ and $\frac{3 x^{\frac{1}{2}}}{2}$ .

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

Step 1.10

Simplify.

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Step 1.10.1

Reorder terms.

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

Step 1.10.2

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

$2 e^{2 x} x^{\frac{3}{2}} + \frac{3 e^{2 x} x^{\frac{1}{2}}}{2}$

Step 2

Find the second derivative of the function.

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Step 2.1

By the Sum Rule, the derivative of $2 e^{2 x} x^{\frac{3}{2}} + \frac{3 e^{2 x} x^{\frac{1}{2}}}{2}$ with respect to $x$ is $\frac{d}{d x} [2 e^{2 x} x^{\frac{3}{2}}] + \frac{d}{d x} [\frac{3 e^{2 x} x^{\frac{1}{2}}}{2}]$ .

$k'' (x) = \frac{d}{d x} (2 e^{2 x} x^{\frac{3}{2}}) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2

Evaluate $\frac{d}{d x} [2 e^{2 x} x^{\frac{3}{2}}]$ .

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Step 2.2.1

Since $2$ is constant with respect to $x$ , the derivative of $2 e^{2 x} x^{\frac{3}{2}}$ with respect to $x$ is $2 \frac{d}{d x} [e^{2 x} x^{\frac{3}{2}}]$ .

$k'' (x) = 2 \frac{d}{d x} (e^{2 x} x^{\frac{3}{2}}) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.2

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 $f (x) = e^{2 x}$ and $g (x) = x^{\frac{3}{2}}$ .

$k'' (x) = 2 (e^{2 x} \frac{d}{d x} (x^{\frac{3}{2}}) + x^{\frac{3}{2}} \frac{d}{d x} (e^{2 x})) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.3

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = \frac{3}{2}$ .

$k'' (x) = 2 (e^{2 x} (\frac{3}{2} x^{\frac{3}{2} - 1}) + x^{\frac{3}{2}} \frac{d}{d x} (e^{2 x})) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.4

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 $g (x) = 2 x$ .

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Step 2.2.4.1

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

$k'' (x) = 2 (e^{2 x} (\frac{3}{2} x^{\frac{3}{2} - 1}) + x^{\frac{3}{2}} (\frac{d}{d u (1)} (e^{u_{1}}) \frac{d}{d x} (2 x))) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.4.2

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

$k'' (x) = 2 (e^{2 x} (\frac{3}{2} x^{\frac{3}{2} - 1}) + x^{\frac{3}{2}} (e^{u_{1}} \frac{d}{d x} (2 x))) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.4.3

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

$k'' (x) = 2 (e^{2 x} (\frac{3}{2} x^{\frac{3}{2} - 1}) + x^{\frac{3}{2}} (e^{2 x} \frac{d}{d x} (2 x))) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.5

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

$k'' (x) = 2 (e^{2 x} (\frac{3}{2} x^{\frac{3}{2} - 1}) + x^{\frac{3}{2}} (e^{2 x} (2 \frac{d}{d x} (x)))) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.6

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

$k'' (x) = 2 (e^{2 x} (\frac{3}{2} x^{\frac{3}{2} - 1}) + x^{\frac{3}{2}} (e^{2 x} (2 \cdot 1))) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.7

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

$k'' (x) = 2 (e^{2 x} (\frac{3}{2} x^{\frac{3}{2} - 1 \cdot \frac{2}{2}}) + x^{\frac{3}{2}} (e^{2 x} (2 \cdot 1))) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.8

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

$k'' (x) = 2 (e^{2 x} (\frac{3}{2} x^{\frac{3}{2} + \frac{- 1 \cdot 2}{2}}) + x^{\frac{3}{2}} (e^{2 x} (2 \cdot 1))) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.9

Combine the numerators over the common denominator.

$k'' (x) = 2 (e^{2 x} (\frac{3}{2} x^{\frac{3 - 1 \cdot 2}{2}}) + x^{\frac{3}{2}} (e^{2 x} (2 \cdot 1))) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.10

Simplify the numerator.

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Step 2.2.10.1

Multiply $- 1$ by $2$ .

$k'' (x) = 2 (e^{2 x} (\frac{3}{2} x^{\frac{3 - 2}{2}}) + x^{\frac{3}{2}} (e^{2 x} (2 \cdot 1))) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.10.2

Subtract $2$ from $3$ .

$k'' (x) = 2 (e^{2 x} (\frac{3}{2} x^{\frac{1}{2}}) + x^{\frac{3}{2}} (e^{2 x} (2 \cdot 1))) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.11

Combine $\frac{3}{2}$ and $x^{\frac{1}{2}}$ .

$k'' (x) = 2 (e^{2 x} (\frac{3 x^{\frac{1}{2}}}{2}) + x^{\frac{3}{2}} (e^{2 x} (2 \cdot 1))) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.12

Combine $e^{2 x}$ and $\frac{3 x^{\frac{1}{2}}}{2}$ .

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (e^{2 x} (2 \cdot 1))) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.13

Multiply $2$ by $1$ .

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (e^{2 x} \cdot 2)) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.2.14

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

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{d}{d x} (\frac{3 e^{2 x} x^{\frac{1}{2}}}{2})$

Step 2.3

Evaluate $\frac{d}{d x} [\frac{3 e^{2 x} x^{\frac{1}{2}}}{2}]$ .

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Step 2.3.1

Since $\frac{3}{2}$ is constant with respect to $x$ , the derivative of $\frac{3 e^{2 x} x^{\frac{1}{2}}}{2}$ with respect to $x$ is $\frac{3}{2} \frac{d}{d x} [e^{2 x} x^{\frac{1}{2}}]$ .

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot \frac{d}{d x} (e^{2 x} x^{\frac{1}{2}})$

Step 2.3.2

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (e^{2 x} \frac{d}{d x} (x^{\frac{1}{2}}) + x^{\frac{1}{2}} \frac{d}{d x} (e^{2 x}))$

Step 2.3.3

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

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (e^{2 x} (\frac{1}{2} x^{\frac{1}{2} - 1}) + x^{\frac{1}{2}} \frac{d}{d x} (e^{2 x}))$

Step 2.3.4

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 $g (x) = 2 x$ .

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Step 2.3.4.1

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

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (e^{2 x} (\frac{1}{2} x^{\frac{1}{2} - 1}) + x^{\frac{1}{2}} (\frac{d}{d u (2)} (e^{u_{2}}) \frac{d}{d x} (2 x)))$

Step 2.3.4.2

Differentiate using the Exponential Rule which states that $\frac{d}{d u_{2}} [a^{u_{2}}]$ is $a^{u_{2}} \ln (a)$ where $a$ = $e$ .

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (e^{2 x} (\frac{1}{2} x^{\frac{1}{2} - 1}) + x^{\frac{1}{2}} (e^{u_{2}} \frac{d}{d x} (2 x)))$

Step 2.3.4.3

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

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (e^{2 x} (\frac{1}{2} x^{\frac{1}{2} - 1}) + x^{\frac{1}{2}} (e^{2 x} \frac{d}{d x} (2 x)))$

Step 2.3.5

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

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (e^{2 x} (\frac{1}{2} x^{\frac{1}{2} - 1}) + x^{\frac{1}{2}} (e^{2 x} (2 \frac{d}{d x} (x))))$

Step 2.3.6

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

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (e^{2 x} (\frac{1}{2} x^{\frac{1}{2} - 1}) + x^{\frac{1}{2}} (e^{2 x} (2 \cdot 1)))$

Step 2.3.7

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

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (e^{2 x} (\frac{1}{2} x^{\frac{1}{2} - 1 \cdot \frac{2}{2}}) + x^{\frac{1}{2}} (e^{2 x} (2 \cdot 1)))$

Step 2.3.8

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

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (e^{2 x} (\frac{1}{2} x^{\frac{1}{2} + \frac{- 1 \cdot 2}{2}}) + x^{\frac{1}{2}} (e^{2 x} (2 \cdot 1)))$

Step 2.3.9

Combine the numerators over the common denominator.

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (e^{2 x} (\frac{1}{2} x^{\frac{1 - 1 \cdot 2}{2}}) + x^{\frac{1}{2}} (e^{2 x} (2 \cdot 1)))$

Step 2.3.10

Simplify the numerator.

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Step 2.3.10.1

Multiply $- 1$ by $2$ .

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (e^{2 x} (\frac{1}{2} x^{\frac{1 - 2}{2}}) + x^{\frac{1}{2}} (e^{2 x} (2 \cdot 1)))$

Step 2.3.10.2

Subtract $2$ from $1$ .

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (e^{2 x} (\frac{1}{2} x^{\frac{- 1}{2}}) + x^{\frac{1}{2}} (e^{2 x} (2 \cdot 1)))$

Step 2.3.11

Move the negative in front of the fraction.

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (e^{2 x} (\frac{1}{2} x^{- \frac{1}{2}}) + x^{\frac{1}{2}} (e^{2 x} (2 \cdot 1)))$

Step 2.3.12

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

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (e^{2 x} (\frac{x^{- \frac{1}{2}}}{2}) + x^{\frac{1}{2}} (e^{2 x} (2 \cdot 1)))$

Step 2.3.13

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

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (\frac{e^{2 x} x^{- \frac{1}{2}}}{2} + x^{\frac{1}{2}} (e^{2 x} (2 \cdot 1)))$

Step 2.3.14

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

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (\frac{e^{2 x}}{2 x^{\frac{1}{2}}} + x^{\frac{1}{2}} (e^{2 x} (2 \cdot 1)))$

Step 2.3.15

Multiply $2$ by $1$ .

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (\frac{e^{2 x}}{2 x^{\frac{1}{2}}} + x^{\frac{1}{2}} (e^{2 x} \cdot 2))$

Step 2.3.16

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

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2} + x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (\frac{e^{2 x}}{2 x^{\frac{1}{2}}} + x^{\frac{1}{2}} (2 e^{2 x}))$

Step 2.4

Simplify.

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Step 2.4.1

Apply the distributive property.

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2}) + 2 (x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot (\frac{e^{2 x}}{2 x^{\frac{1}{2}}} + x^{\frac{1}{2}} (2 e^{2 x}))$

Step 2.4.2

Apply the distributive property.

$k'' (x) = 2 (\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2}) + 2 (x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot \frac{e^{2 x}}{2 x^{\frac{1}{2}}} + \frac{3}{2} \cdot (x^{\frac{1}{2}} (2 e^{2 x}))$

Step 2.4.3

Combine terms.

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Step 2.4.3.1

Combine $2$ and $\frac{e^{2 x} (3 x^{\frac{1}{2}})}{2}$ .

$k'' (x) = \frac{2 (e^{2 x} (3 x^{\frac{1}{2}}))}{2} + 2 (x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot \frac{e^{2 x}}{2 x^{\frac{1}{2}}} + \frac{3}{2} \cdot (x^{\frac{1}{2}} (2 e^{2 x}))$

Step 2.4.3.2

Multiply $3$ by $2$ .

$k'' (x) = \frac{6 (e^{2 x} (x^{\frac{1}{2}}))}{2} + 2 (x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot \frac{e^{2 x}}{2 x^{\frac{1}{2}}} + \frac{3}{2} \cdot (x^{\frac{1}{2}} (2 e^{2 x}))$

Step 2.4.3.3

Factor $2$ out of $6 e^{2 x} x^{\frac{1}{2}}$ .

$k'' (x) = \frac{2 (3 e^{2 x} x^{\frac{1}{2}})}{2} + 2 (x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot \frac{e^{2 x}}{2 x^{\frac{1}{2}}} + \frac{3}{2} \cdot (x^{\frac{1}{2}} (2 e^{2 x}))$

Step 2.4.3.4

Cancel the common factors.

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Step 2.4.3.4.1

Factor $2$ out of $2$ .

$k'' (x) = \frac{2 (3 e^{2 x} x^{\frac{1}{2}})}{2 (1)} + 2 (x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot \frac{e^{2 x}}{2 x^{\frac{1}{2}}} + \frac{3}{2} \cdot (x^{\frac{1}{2}} (2 e^{2 x}))$

Step 2.4.3.4.2

Cancel the common factor.

$k'' (x) = \frac{2 (3 e^{2 x} x^{\frac{1}{2}})}{2 \cdot 1} + 2 (x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot \frac{e^{2 x}}{2 x^{\frac{1}{2}}} + \frac{3}{2} \cdot (x^{\frac{1}{2}} (2 e^{2 x}))$

Step 2.4.3.4.3

Rewrite the expression.

$k'' (x) = \frac{3 e^{2 x} x^{\frac{1}{2}}}{1} + 2 (x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot \frac{e^{2 x}}{2 x^{\frac{1}{2}}} + \frac{3}{2} \cdot (x^{\frac{1}{2}} (2 e^{2 x}))$

Step 2.4.3.4.4

Divide $3 e^{2 x} x^{\frac{1}{2}}$ by $1$ .

$k'' (x) = 3 e^{2 x} x^{\frac{1}{2}} + 2 (x^{\frac{3}{2}} (2 e^{2 x})) + \frac{3}{2} \cdot \frac{e^{2 x}}{2 x^{\frac{1}{2}}} + \frac{3}{2} \cdot (x^{\frac{1}{2}} (2 e^{2 x}))$

Step 2.4.3.5

Multiply $2$ by $2$ .

$k'' (x) = 3 e^{2 x} x^{\frac{1}{2}} + 4 (x^{\frac{3}{2}} (e^{2 x})) + \frac{3}{2} \cdot \frac{e^{2 x}}{2 x^{\frac{1}{2}}} + \frac{3}{2} \cdot (x^{\frac{1}{2}} (2 e^{2 x}))$

Step 2.4.3.6

Multiply $\frac{3}{2}$ by $\frac{e^{2 x}}{2 x^{\frac{1}{2}}}$ .

$k'' (x) = 3 e^{2 x} x^{\frac{1}{2}} + 4 x^{\frac{3}{2}} e^{2 x} + \frac{3 e^{2 x}}{2 (2 x^{\frac{1}{2}})} + \frac{3}{2} \cdot (x^{\frac{1}{2}} (2 e^{2 x}))$

Step 2.4.3.7

Multiply $2$ by $2$ .

$k'' (x) = 3 e^{2 x} x^{\frac{1}{2}} + 4 x^{\frac{3}{2}} e^{2 x} + \frac{3 e^{2 x}}{4 x^{\frac{1}{2}}} + \frac{3}{2} \cdot (x^{\frac{1}{2}} (2 e^{2 x}))$

Step 2.4.3.8

Combine $x^{\frac{1}{2}}$ and $\frac{3}{2}$ .

$k'' (x) = 3 e^{2 x} x^{\frac{1}{2}} + 4 x^{\frac{3}{2}} e^{2 x} + \frac{3 e^{2 x}}{4 x^{\frac{1}{2}}} + \frac{x^{\frac{1}{2}} \cdot 3}{2} \cdot (2 e^{2 x})$

Step 2.4.3.9

Combine $2$ and $\frac{x^{\frac{1}{2}} \cdot 3}{2}$ .

$k'' (x) = 3 e^{2 x} x^{\frac{1}{2}} + 4 x^{\frac{3}{2}} e^{2 x} + \frac{3 e^{2 x}}{4 x^{\frac{1}{2}}} + \frac{2 (x^{\frac{1}{2}} \cdot 3)}{2} \cdot e^{2 x}$

Step 2.4.3.10

Multiply $3$ by $2$ .

$k'' (x) = 3 e^{2 x} x^{\frac{1}{2}} + 4 x^{\frac{3}{2}} e^{2 x} + \frac{3 e^{2 x}}{4 x^{\frac{1}{2}}} + \frac{6 x^{\frac{1}{2}}}{2} \cdot e^{2 x}$

Step 2.4.3.11

Combine $\frac{6 x^{\frac{1}{2}}}{2}$ and $e^{2 x}$ .

$k'' (x) = 3 e^{2 x} x^{\frac{1}{2}} + 4 x^{\frac{3}{2}} e^{2 x} + \frac{3 e^{2 x}}{4 x^{\frac{1}{2}}} + \frac{6 x^{\frac{1}{2}} e^{2 x}}{2}$

Step 2.4.3.12

Factor $2$ out of $6 x^{\frac{1}{2}} e^{2 x}$ .

$k'' (x) = 3 e^{2 x} x^{\frac{1}{2}} + 4 x^{\frac{3}{2}} e^{2 x} + \frac{3 e^{2 x}}{4 x^{\frac{1}{2}}} + \frac{2 (3 x^{\frac{1}{2}} e^{2 x})}{2}$

Step 2.4.3.13

Cancel the common factors.

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Step 2.4.3.13.1

Factor $2$ out of $2$ .

$k'' (x) = 3 e^{2 x} x^{\frac{1}{2}} + 4 x^{\frac{3}{2}} e^{2 x} + \frac{3 e^{2 x}}{4 x^{\frac{1}{2}}} + \frac{2 (3 x^{\frac{1}{2}} e^{2 x})}{2 (1)}$

Step 2.4.3.13.2

Cancel the common factor.

$k'' (x) = 3 e^{2 x} x^{\frac{1}{2}} + 4 x^{\frac{3}{2}} e^{2 x} + \frac{3 e^{2 x}}{4 x^{\frac{1}{2}}} + \frac{2 (3 x^{\frac{1}{2}} e^{2 x})}{2 \cdot 1}$

Step 2.4.3.13.3

Rewrite the expression.

$k'' (x) = 3 e^{2 x} x^{\frac{1}{2}} + 4 x^{\frac{3}{2}} e^{2 x} + \frac{3 e^{2 x}}{4 x^{\frac{1}{2}}} + \frac{3 x^{\frac{1}{2}} e^{2 x}}{1}$

Step 2.4.3.13.4

Divide $3 x^{\frac{1}{2}} e^{2 x}$ by $1$ .

$k'' (x) = 3 e^{2 x} x^{\frac{1}{2}} + 4 x^{\frac{3}{2}} e^{2 x} + \frac{3 e^{2 x}}{4 x^{\frac{1}{2}}} + 3 x^{\frac{1}{2}} e^{2 x}$

Step 2.4.3.14

Add $3 e^{2 x} x^{\frac{1}{2}}$ and $3 x^{\frac{1}{2}} e^{2 x}$ .

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Step 2.4.3.14.1

Move $e^{2 x}$ .

$k'' (x) = 3 x^{\frac{1}{2}} e^{2 x} + 3 x^{\frac{1}{2}} e^{2 x} + 4 x^{\frac{3}{2}} e^{2 x} + \frac{3 e^{2 x}}{4 x^{\frac{1}{2}}}$

Step 2.4.3.14.2

Add $3 x^{\frac{1}{2}} e^{2 x}$ and $3 x^{\frac{1}{2}} e^{2 x}$ .

$k'' (x) = 6 x^{\frac{1}{2}} e^{2 x} + 4 x^{\frac{3}{2}} e^{2 x} + \frac{3 e^{2 x}}{4 x^{\frac{1}{2}}}$

Step 2.4.4

Reorder terms.

$k'' (x) = 6 e^{2 x} x^{\frac{1}{2}} + 4 e^{2 x} x^{\frac{3}{2}} + \frac{3 e^{2 x}}{4 x^{\frac{1}{2}}}$

Step 3

To find the local maximum and minimum values of the function, set the derivative equal to $0$ and solve.

$2 e^{2 x} x^{\frac{3}{2}} + \frac{3 e^{2 x} x^{\frac{1}{2}}}{2} = 0$

Step 4

Find the first derivative.

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Step 4.1

Find the first derivative.

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Step 4.1.1

$x^{\frac{3}{2}} \frac{d}{d x} [e^{2 x}] + e^{2 x} \frac{d}{d x} [x^{\frac{3}{2}}]$

Step 4.1.2

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 $g (x) = 2 x$ .

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Step 4.1.2.1

To apply the Chain Rule, set $u$ as $2 x$ .

$x^{\frac{3}{2}} (\frac{d}{d u} [e^{u}] \frac{d}{d x} [2 x]) + e^{2 x} \frac{d}{d x} [x^{\frac{3}{2}}]$

Step 4.1.2.2

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

$x^{\frac{3}{2}} (e^{u} \frac{d}{d x} [2 x]) + e^{2 x} \frac{d}{d x} [x^{\frac{3}{2}}]$

Step 4.1.2.3

Replace all occurrences of $u$ with $2 x$ .

$x^{\frac{3}{2}} (e^{2 x} \frac{d}{d x} [2 x]) + e^{2 x} \frac{d}{d x} [x^{\frac{3}{2}}]$

Step 4.1.3

Differentiate.

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Step 4.1.3.1

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

$x^{\frac{3}{2}} (e^{2 x} (2 \frac{d}{d x} [x])) + e^{2 x} \frac{d}{d x} [x^{\frac{3}{2}}]$

Step 4.1.3.2

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

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

Step 4.1.3.3

Simplify the expression.

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Step 4.1.3.3.1

Multiply $2$ by $1$ .

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

Step 4.1.3.3.2

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

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

Step 4.1.3.4

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = \frac{3}{2}$ .

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

Step 4.1.4

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

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

Step 4.1.5

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

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

Step 4.1.6

Combine the numerators over the common denominator.

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

Step 4.1.7

Simplify the numerator.

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Step 4.1.7.1

Multiply $- 1$ by $2$ .

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

Step 4.1.7.2

Subtract $2$ from $3$ .

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

Step 4.1.8

Combine $\frac{3}{2}$ and $x^{\frac{1}{2}}$ .

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

Step 4.1.9

Combine $e^{2 x}$ and $\frac{3 x^{\frac{1}{2}}}{2}$ .

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

Step 4.1.10

Simplify.

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Step 4.1.10.1

Reorder terms.

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

Step 4.1.10.2

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

$f' (x) = 2 e^{2 x} x^{\frac{3}{2}} + \frac{3 e^{2 x} x^{\frac{1}{2}}}{2}$

Step 4.2

The first derivative of $k (x)$ with respect to $x$ is $2 e^{2 x} x^{\frac{3}{2}} + \frac{3 e^{2 x} x^{\frac{1}{2}}}{2}$ .

$2 e^{2 x} x^{\frac{3}{2}} + \frac{3 e^{2 x} x^{\frac{1}{2}}}{2}$

Step 5

Set the first derivative equal to $0$ then solve the equation $2 e^{2 x} x^{\frac{3}{2}} + \frac{3 e^{2 x} x^{\frac{1}{2}}}{2} = 0$ .

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Step 5.1

Set the first derivative equal to $0$ .

$2 e^{2 x} x^{\frac{3}{2}} + \frac{3 e^{2 x} x^{\frac{1}{2}}}{2} = 0$

Step 5.2

Find a common factor $e^{2 x} x$ that is present in each term.

$2 {(e x^{2 x})}^{\frac{4 x + 3}{4 x}} + \frac{3}{2 {(e x^{2 x})}^{\frac{4 x + 1}{4 x}}}$

Step 5.3

Substitute $u$ for $e^{2 x} x$ .

$2 {(e x^{2 x})}^{\frac{4 x + 3}{4 x}} + \frac{3}{2 {(e x^{2 x})}^{\frac{4 x + 1}{4 x}}} = 0$

Step 5.4

Solve for $u$ .

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Step 5.4.1

Move $\frac{3}{2 {(e x^{2 x})}^{\frac{4 x + 1}{4 x}}}$ to the right side of the equation by subtracting it from both sides.

$2 {(e x^{2 x})}^{\frac{4 x + 3}{4 x}} = - \frac{3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}}$

Step 5.4.2

Simplify $2 {(e x^{2 x})}^{\frac{4 x + 3}{4 x}}$ .

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Step 5.4.2.1

Apply the product rule to $e x^{2 x}$ .

$2 (e^{\frac{4 x + 3}{4 x}} {(x^{2 x})}^{\frac{4 x + 3}{4 x}}) = - \frac{3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}}$

Step 5.4.2.2

Multiply the exponents in ${(x^{2 x})}^{\frac{4 x + 3}{4 x}}$ .

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Step 5.4.2.2.1

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

$2 (e^{\frac{4 x + 3}{4 x}} x^{2 x \frac{4 x + 3}{4 x}}) = - \frac{3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}}$

Step 5.4.2.2.2

Cancel the common factor of $2 x$ .

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Step 5.4.2.2.2.1

Factor $2 x$ out of $4 x$ .

$2 (e^{\frac{4 x + 3}{4 x}} x^{2 x \frac{4 x + 3}{2 x (2)}}) = - \frac{3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}}$

Step 5.4.2.2.2.2

Cancel the common factor.

$2 (e^{\frac{4 x + 3}{4 x}} x^{2 x \frac{4 x + 3}{2 x \cdot 2}}) = - \frac{3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}}$

Step 5.4.2.2.2.3

Rewrite the expression.

$2 (e^{\frac{4 x + 3}{4 x}} x^{\frac{4 x + 3}{2}}) = - \frac{3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}}$

$2 e^{\frac{4 x + 3}{4 x}} x^{\frac{4 x + 3}{2}} = - \frac{3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}}$

Step 5.4.3

Move all terms containing $x$ to the left side of the equation.

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Step 5.4.3.1

Add $\frac{3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}}$ to both sides of the equation.

$2 e^{\frac{4 x + 3}{4 x}} x^{\frac{4 x + 3}{2}} + \frac{3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.2

To write $2 e^{\frac{4 x + 3}{4 x}} x^{\frac{4 x + 3}{2}}$ as a fraction with a common denominator, multiply by $\frac{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}}$ .

$2 e^{\frac{4 x + 3}{4 x}} x^{\frac{4 x + 3}{2}} \cdot \frac{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} + \frac{3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.3

Combine $2 e^{\frac{4 x + 3}{4 x}} x^{\frac{4 x + 3}{2}}$ and $\frac{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}}$ .

$\frac{2 e^{\frac{4 x + 3}{4 x}} x^{\frac{4 x + 3}{2}} (2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}})}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} + \frac{3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.4

Combine the numerators over the common denominator.

$\frac{2 e^{\frac{4 x + 3}{4 x}} x^{\frac{4 x + 3}{2}} (2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}) + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5

Simplify the numerator.

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Step 5.4.3.5.1

Multiply $e^{\frac{4 x + 3}{4 x}}$ by $e^{\frac{4 x + 1}{4 x}}$ by adding the exponents.

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Step 5.4.3.5.1.1

Move $e^{\frac{4 x + 1}{4 x}}$ .

$\frac{2 (e^{\frac{4 x + 1}{4 x}} e^{\frac{4 x + 3}{4 x}}) x^{\frac{4 x + 3}{2}} (2 x^{\frac{4 x + 1}{2}}) + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.1.2

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

$\frac{2 e^{\frac{4 x + 1}{4 x} + \frac{4 x + 3}{4 x}} x^{\frac{4 x + 3}{2}} (2 x^{\frac{4 x + 1}{2}}) + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.1.3

Combine the numerators over the common denominator.

$\frac{2 e^{\frac{4 x + 1 + 4 x + 3}{4 x}} x^{\frac{4 x + 3}{2}} (2 x^{\frac{4 x + 1}{2}}) + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.1.4

Add $4 x$ and $4 x$ .

$\frac{2 e^{\frac{8 x + 1 + 3}{4 x}} x^{\frac{4 x + 3}{2}} (2 x^{\frac{4 x + 1}{2}}) + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.1.5

Add $1$ and $3$ .

$\frac{2 e^{\frac{8 x + 4}{4 x}} x^{\frac{4 x + 3}{2}} (2 x^{\frac{4 x + 1}{2}}) + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.1.6

Cancel the common factor of $8 x + 4$ and $4$ .

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Step 5.4.3.5.1.6.1

Factor $4$ out of $8 x$ .

$\frac{2 e^{\frac{4 (2 x) + 4}{4 x}} x^{\frac{4 x + 3}{2}} (2 x^{\frac{4 x + 1}{2}}) + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.1.6.2

Factor $4$ out of $4$ .

$\frac{2 e^{\frac{4 (2 x) + 4 \cdot 1}{4 x}} x^{\frac{4 x + 3}{2}} (2 x^{\frac{4 x + 1}{2}}) + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.1.6.3

Factor $4$ out of $4 (2 x) + 4 (1)$ .

$\frac{2 e^{\frac{4 (2 x + 1)}{4 x}} x^{\frac{4 x + 3}{2}} (2 x^{\frac{4 x + 1}{2}}) + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.1.6.4

Cancel the common factors.

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Step 5.4.3.5.1.6.4.1

Factor $4$ out of $4 x$ .

$\frac{2 e^{\frac{4 (2 x + 1)}{4 (x)}} x^{\frac{4 x + 3}{2}} (2 x^{\frac{4 x + 1}{2}}) + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.1.6.4.2

Cancel the common factor.

$\frac{2 e^{\frac{4 (2 x + 1)}{4 x}} x^{\frac{4 x + 3}{2}} (2 x^{\frac{4 x + 1}{2}}) + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.1.6.4.3

Rewrite the expression.

$\frac{2 e^{\frac{2 x + 1}{x}} x^{\frac{4 x + 3}{2}} (2 x^{\frac{4 x + 1}{2}}) + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.2

Multiply $x^{\frac{4 x + 3}{2}}$ by $x^{\frac{4 x + 1}{2}}$ by adding the exponents.

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Step 5.4.3.5.2.1

Move $x^{\frac{4 x + 1}{2}}$ .

$\frac{2 e^{\frac{2 x + 1}{x}} (x^{\frac{4 x + 1}{2}} x^{\frac{4 x + 3}{2}}) \cdot 2 + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.2.2

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

$\frac{2 e^{\frac{2 x + 1}{x}} x^{\frac{4 x + 1}{2} + \frac{4 x + 3}{2}} \cdot 2 + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.2.3

Combine the numerators over the common denominator.

$\frac{2 e^{\frac{2 x + 1}{x}} x^{\frac{4 x + 1 + 4 x + 3}{2}} \cdot 2 + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.2.4

Add $4 x$ and $4 x$ .

$\frac{2 e^{\frac{2 x + 1}{x}} x^{\frac{8 x + 1 + 3}{2}} \cdot 2 + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.2.5

Add $1$ and $3$ .

$\frac{2 e^{\frac{2 x + 1}{x}} x^{\frac{8 x + 4}{2}} \cdot 2 + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.2.6

Cancel the common factor of $8 x + 4$ and $2$ .

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Step 5.4.3.5.2.6.1

Factor $2$ out of $8 x$ .

$\frac{2 e^{\frac{2 x + 1}{x}} x^{\frac{2 (4 x) + 4}{2}} \cdot 2 + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.2.6.2

Factor $2$ out of $4$ .

$\frac{2 e^{\frac{2 x + 1}{x}} x^{\frac{2 (4 x) + 2 \cdot 2}{2}} \cdot 2 + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.2.6.3

Factor $2$ out of $2 (4 x) + 2 (2)$ .

$\frac{2 e^{\frac{2 x + 1}{x}} x^{\frac{2 (4 x + 2)}{2}} \cdot 2 + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.2.6.4

Cancel the common factors.

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Step 5.4.3.5.2.6.4.1

Factor $2$ out of $2$ .

$\frac{2 e^{\frac{2 x + 1}{x}} x^{\frac{2 (4 x + 2)}{2 (1)}} \cdot 2 + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.2.6.4.2

Cancel the common factor.

$\frac{2 e^{\frac{2 x + 1}{x}} x^{\frac{2 (4 x + 2)}{2 \cdot 1}} \cdot 2 + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.2.6.4.3

Rewrite the expression.

$\frac{2 e^{\frac{2 x + 1}{x}} x^{\frac{4 x + 2}{1}} \cdot 2 + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.2.6.4.4

Divide $4 x + 2$ by $1$ .

$\frac{2 e^{\frac{2 x + 1}{x}} x^{4 x + 2} \cdot 2 + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.4.3.5.3

Multiply $2$ by $2$ .

$\frac{4 e^{\frac{2 x + 1}{x}} x^{4 x + 2} + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.5

Substitute $x$ for $u$ .

$\frac{4 e^{\frac{2 x + 1}{x}} x^{4 x + 2} + 3}{2 e^{\frac{4 x + 1}{4 x}} x^{\frac{4 x + 1}{2}}} = 0$

Step 5.6

Factor the left side of the equation.

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Step 5.6.1

Factor $e^{2 x} x^{\frac{1}{2}}$ out of $2 e^{2 x} x^{\frac{3}{2}} + \frac{3 e^{2 x} x^{\frac{1}{2}}}{2}$ .

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Step 5.6.1.1

Reorder the expression.

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Step 5.6.1.1.1

Move $e^{2 x}$ .

$2 x^{\frac{3}{2}} e^{2 x} + \frac{3 e^{2 x} x^{\frac{1}{2}}}{2} = 0$

Step 5.6.1.1.2

Move $e^{2 x}$ .

$2 x^{\frac{3}{2}} e^{2 x} + \frac{3 x^{\frac{1}{2}} e^{2 x}}{2} = 0$

Step 5.6.1.2

Factor $e^{2 x} x^{\frac{1}{2}}$ out of $2 x^{\frac{3}{2}} e^{2 x}$ .

$e^{2 x} x^{\frac{1}{2}} (2 x^{\frac{2}{2}}) + \frac{3 x^{\frac{1}{2}} e^{2 x}}{2} = 0$

Step 5.6.1.3

Factor $e^{2 x} x^{\frac{1}{2}}$ out of $\frac{3 x^{\frac{1}{2}} e^{2 x}}{2}$ .

$e^{2 x} x^{\frac{1}{2}} (2 x^{\frac{2}{2}}) + e^{2 x} x^{\frac{1}{2}} (\frac{3}{2}) = 0$

Step 5.6.1.4

Factor $e^{2 x} x^{\frac{1}{2}}$ out of $e^{2 x} x^{\frac{1}{2}} (2 x^{\frac{2}{2}}) + e^{2 x} x^{\frac{1}{2}} \frac{3}{2}$ .

$e^{2 x} x^{\frac{1}{2}} (2 x^{\frac{2}{2}} + \frac{3}{2}) = 0$

Step 5.6.2

Divide $2$ by $2$ .

$e^{2 x} x^{\frac{1}{2}} (2 x + \frac{3}{2}) = 0$

Step 5.6.3

Simplify.

$e^{2 x} x^{\frac{1}{2}} (2 x + \frac{3}{2}) = 0$

Step 5.7

If any individual factor on the left side of the equation is equal to $0$ , the entire expression will be equal to $0$ .

$e^{2 x} = 0$

$x^{\frac{1}{2}} = 0$

$2 x + \frac{3}{2} = 0$

Step 5.8

Set $e^{2 x}$ equal to $0$ and solve for $x$ .

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Step 5.8.1

Set $e^{2 x}$ equal to $0$ .

$e^{2 x} = 0$

Step 5.8.2

Solve $e^{2 x} = 0$ for $x$ .

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Step 5.8.2.1

Take the natural logarithm of both sides of the equation to remove the variable from the exponent.

$\ln (e^{2 x}) = \ln (0)$

Step 5.8.2.2

The equation cannot be solved because $\ln (0)$ is undefined.

Undefined

Step 5.8.2.3

There is no solution for $e^{2 x} = 0$

No solution

Step 5.9

Set $x^{\frac{1}{2}}$ equal to $0$ and solve for $x$ .

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Step 5.9.1

Set $x^{\frac{1}{2}}$ equal to $0$ .

$x^{\frac{1}{2}} = 0$

Step 5.9.2

Solve $x^{\frac{1}{2}} = 0$ for $x$ .

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Step 5.9.2.1

Raise each side of the equation to the power of $2$ to eliminate the fractional exponent on the left side.

${(x^{\frac{1}{2}})}^{2} = 0^{2}$

Step 5.9.2.2

Simplify the exponent.

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Step 5.9.2.2.1

Simplify the left side.

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Step 5.9.2.2.1.1

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

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Step 5.9.2.2.1.1.1

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

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Step 5.9.2.2.1.1.1.1

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

$x^{\frac{1}{2} \cdot 2} = 0^{2}$

Step 5.9.2.2.1.1.1.2

Cancel the common factor of $2$ .

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Step 5.9.2.2.1.1.1.2.1

Cancel the common factor.

$x^{\frac{1}{2} \cdot 2} = 0^{2}$

Step 5.9.2.2.1.1.1.2.2

Rewrite the expression.

$x^{1} = 0^{2}$

Step 5.9.2.2.1.1.2

Simplify.

$x = 0^{2}$

Step 5.9.2.2.2

Simplify the right side.

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Step 5.9.2.2.2.1

Raising $0$ to any positive power yields $0$ .

$x = 0$

Step 5.10

Set $2 x + \frac{3}{2}$ equal to $0$ and solve for $x$ .

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Step 5.10.1

Set $2 x + \frac{3}{2}$ equal to $0$ .

$2 x + \frac{3}{2} = 0$

Step 5.10.2

Solve $2 x + \frac{3}{2} = 0$ for $x$ .

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Step 5.10.2.1

Subtract $\frac{3}{2}$ from both sides of the equation.

$2 x = - \frac{3}{2}$

Step 5.10.2.2

Divide each term in $2 x = - \frac{3}{2}$ by $2$ and simplify.

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Step 5.10.2.2.1

Divide each term in $2 x = - \frac{3}{2}$ by $2$ .

$\frac{2 x}{2} = \frac{- \frac{3}{2}}{2}$

Step 5.10.2.2.2

Simplify the left side.

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Step 5.10.2.2.2.1

Cancel the common factor of $2$ .

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Step 5.10.2.2.2.1.1

Cancel the common factor.

$\frac{2 x}{2} = \frac{- \frac{3}{2}}{2}$

Step 5.10.2.2.2.1.2

Divide $x$ by $1$ .

$x = \frac{- \frac{3}{2}}{2}$

Step 5.10.2.2.3

Simplify the right side.

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Step 5.10.2.2.3.1

Multiply the numerator by the reciprocal of the denominator.

$x = - \frac{3}{2} \cdot \frac{1}{2}$

Step 5.10.2.2.3.2

Multiply $- \frac{3}{2} \cdot \frac{1}{2}$ .

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Step 5.10.2.2.3.2.1

Multiply $\frac{1}{2}$ by $\frac{3}{2}$ .

$x = - \frac{3}{2 \cdot 2}$

Step 5.10.2.2.3.2.2

Multiply $2$ by $2$ .

$x = - \frac{3}{4}$

Step 5.11

The final solution is all the values that make $e^{2 x} x^{\frac{1}{2}} (2 x + \frac{3}{2}) = 0$ true.

$x = 0, - \frac{3}{4}$

Step 5.12

Exclude the solutions that do not make $2 e^{2 x} x^{\frac{3}{2}} + \frac{3 e^{2 x} x^{\frac{1}{2}}}{2} = 0$ true.

$x = 0$

Step 6

Find the values where the derivative is undefined.

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Step 6.1

Convert expressions with fractional exponents to radicals.

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Step 6.1.1

Apply the rule $x^{\frac{m}{n}} = \sqrt[n]{x^{m}}$ to rewrite the exponentiation as a radical.

$2 e^{2 x} \sqrt{x^{3}} + \frac{3 e^{2 x} x^{\frac{1}{2}}}{2}$

Step 6.1.2

Apply the rule $x^{\frac{m}{n}} = \sqrt[n]{x^{m}}$ to rewrite the exponentiation as a radical.

$2 e^{2 x} \sqrt{x^{3}} + \frac{3 e^{2 x} \sqrt{x^{1}}}{2}$

Step 6.1.3

Anything raised to $1$ is the base itself.

$2 e^{2 x} \sqrt{x^{3}} + \frac{3 e^{2 x} \sqrt{x}}{2}$

Step 6.2

Set the radicand in $\sqrt{x^{3}}$ less than $0$ to find where the expression is undefined.

$x^{3} < 0$

Step 6.3

Solve for $x$ .

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Step 6.3.1

Take the specified root of both sides of the inequality to eliminate the exponent on the left side.

$\sqrt[3]{x^{3}} < \sqrt[3]{0}$

Step 6.3.2

Simplify the equation.

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Step 6.3.2.1

Simplify the left side.

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Step 6.3.2.1.1

Pull terms out from under the radical.

$x < \sqrt[3]{0}$

Step 6.3.2.2

Simplify the right side.

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Step 6.3.2.2.1

Simplify $\sqrt[3]{0}$ .

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Step 6.3.2.2.1.1

Rewrite $0$ as $0^{3}$ .

$x < \sqrt[3]{0^{3}}$

Step 6.3.2.2.1.2

Pull terms out from under the radical.

$x < 0$

Step 6.4

The equation is undefined where the denominator equals $0$ , the argument of a square root is less than $0$ , or the argument of a logarithm is less than or equal to $0$ .

$x < 0$

$(- \infty, 0)$

$x < 0$

$(- \infty, 0)$

Step 7

Critical points to evaluate.

$x = 0$

Step 8

Evaluate the second derivative at $x = 0$ . If the second derivative is positive, then this is a local minimum. If it is negative, then this is a local maximum.

$6 e^{2 (0)} {(0)}^{\frac{1}{2}} + 4 e^{2 (0)} {(0)}^{\frac{3}{2}} + \frac{3 e^{2 (0)}}{4 {(0)}^{\frac{1}{2}}}$

Step 9

Evaluate the second derivative.

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Step 9.1

Simplify the expression.

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Step 9.1.1

Rewrite $0$ as $0^{2}$ .

$6 e^{2 (0)} {(0)}^{\frac{1}{2}} + 4 e^{2 (0)} {(0)}^{\frac{3}{2}} + \frac{3 e^{2 (0)}}{4 {(0^{2})}^{\frac{1}{2}}}$

Step 9.1.2

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

$6 e^{2 (0)} {(0)}^{\frac{1}{2}} + 4 e^{2 (0)} {(0)}^{\frac{3}{2}} + \frac{3 e^{2 (0)}}{4 \cdot 0^{2 (\frac{1}{2})}}$

Step 9.2

Cancel the common factor of $2$ .

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Step 9.2.1

Cancel the common factor.

$6 e^{2 (0)} {(0)}^{\frac{1}{2}} + 4 e^{2 (0)} {(0)}^{\frac{3}{2}} + \frac{3 e^{2 (0)}}{4 \cdot 0^{2 (\frac{1}{2})}}$

Step 9.2.2

Rewrite the expression.

$6 e^{2 (0)} {(0)}^{\frac{1}{2}} + 4 e^{2 (0)} {(0)}^{\frac{3}{2}} + \frac{3 e^{2 (0)}}{4 \cdot 0^{1}}$

Step 9.3

Evaluate the exponent.

$6 e^{2 (0)} {(0)}^{\frac{1}{2}} + 4 e^{2 (0)} {(0)}^{\frac{3}{2}} + \frac{3 e^{2 (0)}}{4 \cdot 0}$

Step 9.4

Multiply $4$ by $0$ .

$6 e^{2 (0)} {(0)}^{\frac{1}{2}} + 4 e^{2 (0)} {(0)}^{\frac{3}{2}} + \frac{3 e^{2 (0)}}{0}$

Step 9.5

The expression contains a division by $0$ . The expression is undefined.

Undefined

Step 10

Since the first derivative test failed, there are no local extrema.

No Local Extrema

Step 11