Calculus Examples

$\int \frac{3 \sqrt{x} - 2 x^{2} + 5 x}{\sqrt{x}} d x$

Step 1

Apply basic rules of exponents.

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Step 1.1

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

$\frac{d}{d x} [\int \frac{3 x^{\frac{1}{2}} - 2 x^{2} + 5 x}{\sqrt{x}} d x]$

Step 1.2

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

$\frac{d}{d x} [\int \frac{3 x^{\frac{1}{2}} - 2 x^{2} + 5 x}{x^{\frac{1}{2}}} d x]$

Step 2

Factor $x^{\frac{1}{2}}$ out of $3 x^{\frac{1}{2}} - 2 x^{2} + 5 x$ .

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Step 2.1

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

$\frac{d}{d x} [\int \frac{x^{\frac{1}{2}} \cdot 3 - 2 x^{2} + 5 x}{x^{\frac{1}{2}}} d x]$

Step 2.2

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

$\frac{d}{d x} [\int \frac{x^{\frac{1}{2}} \cdot 3 + x^{\frac{1}{2}} (- 2 x^{\frac{3}{2}}) + 5 x}{x^{\frac{1}{2}}} d x]$

Step 2.3

Factor $x^{\frac{1}{2}}$ out of $5 x$ .

$\frac{d}{d x} [\int \frac{x^{\frac{1}{2}} \cdot 3 + x^{\frac{1}{2}} (- 2 x^{\frac{3}{2}}) + x^{\frac{1}{2}} (5 x^{\frac{1}{2}})}{x^{\frac{1}{2}}} d x]$

Step 2.4

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

$\frac{d}{d x} [\int \frac{x^{\frac{1}{2}} \cdot (3 - 2 x^{\frac{3}{2}}) + x^{\frac{1}{2}} (5 x^{\frac{1}{2}})}{x^{\frac{1}{2}}} d x]$

Step 2.5

Factor $x^{\frac{1}{2}}$ out of $x^{\frac{1}{2}} \cdot (3 - 2 x^{\frac{3}{2}}) + x^{\frac{1}{2}} (5 x^{\frac{1}{2}})$ .

$\frac{d}{d x} [\int \frac{x^{\frac{1}{2}} (3 - 2 x^{\frac{3}{2}} + 5 x^{\frac{1}{2}})}{x^{\frac{1}{2}}} d x]$

Step 3

Cancel the common factor.

$\frac{d}{d x} [\int \frac{x^{\frac{1}{2}} (3 - 2 x^{\frac{3}{2}} + 5 x^{\frac{1}{2}})}{x^{\frac{1}{2}}} d x]$

Step 4

Simplify the expression.

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Step 4.1

Divide $3 - 2 x^{\frac{3}{2}} + 5 x^{\frac{1}{2}}$ by $1$ .

$\frac{d}{d x} [\int 3 - 2 x^{\frac{3}{2}} + 5 x^{\frac{1}{2}} d x]$

Step 4.2

$\int 3 - 2 x^{\frac{3}{2}} + 5 x^{\frac{1}{2}} d x$ is an antiderivative of $3 - 2 x^{\frac{3}{2}} + 5 x^{\frac{1}{2}}$ , so by definition $\frac{d}{d x} [\int 3 - 2 x^{\frac{3}{2}} + 5 x^{\frac{1}{2}} d x]$ is $3 - 2 x^{\frac{3}{2}} + 5 x^{\frac{1}{2}}$ .

$3 - 2 x^{\frac{3}{2}} + 5 x^{\frac{1}{2}}$

Step 4.3

Reorder terms.

$5 x^{\frac{1}{2}} - 2 x^{\frac{3}{2}} + 3$