Calculus Examples

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

Step 1

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

$\int \frac{2 x^{2} - 3}{x^{\frac{1}{2}}} d x$

Step 2

Move $x^{\frac{1}{2}}$ out of the denominator by raising it to the $- 1$ power.

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

Step 3

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

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Step 3.1

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

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

Step 3.2

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

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

Step 3.3

Move the negative in front of the fraction.

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

Step 4

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

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Step 4.1

Apply the distributive property.

$\int 2 x^{2} x^{- \frac{1}{2}} - 3 x^{- \frac{1}{2}} d x$

Step 4.2

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

$\int 2 x^{2 - \frac{1}{2}} - 3 x^{- \frac{1}{2}} d x$

Step 4.3

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

$\int 2 x^{2 \cdot \frac{2}{2} - \frac{1}{2}} - 3 x^{- \frac{1}{2}} d x$

Step 4.4

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

$\int 2 x^{\frac{2 \cdot 2}{2} - \frac{1}{2}} - 3 x^{- \frac{1}{2}} d x$

Step 4.5

Combine the numerators over the common denominator.

$\int 2 x^{\frac{2 \cdot 2 - 1}{2}} - 3 x^{- \frac{1}{2}} d x$

Step 4.6

Simplify the numerator.

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Step 4.6.1

Multiply $2$ by $2$ .

$\int 2 x^{\frac{4 - 1}{2}} - 3 x^{- \frac{1}{2}} d x$

Step 4.6.2

Subtract $1$ from $4$ .

$\int 2 x^{\frac{3}{2}} - 3 x^{- \frac{1}{2}} d x$

Step 5

Split the single integral into multiple integrals.

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

Step 6

Since $2$ is constant with respect to $x$ , move $2$ out of the integral.

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

Step 7

By the Power Rule, the integral of $x^{\frac{3}{2}}$ with respect to $x$ is $\frac{2}{5} x^{\frac{5}{2}}$ .

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

Step 8

Since $- 3$ is constant with respect to $x$ , move $- 3$ out of the integral.

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

Step 9

By the Power Rule, the integral of $x^{- \frac{1}{2}}$ with respect to $x$ is $2 x^{\frac{1}{2}}$ .

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

Step 10

Simplify.

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Step 10.1

Simplify.

$2 (\frac{2}{5}) x^{\frac{5}{2}} - 3 \cdot 2 x^{\frac{1}{2}} + C$

Step 10.2

Simplify.

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Step 10.2.1

Combine $2$ and $\frac{2}{5}$ .

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

Step 10.2.2

Multiply $2$ by $2$ .

$\frac{4}{5} x^{\frac{5}{2}} - 3 \cdot 2 x^{\frac{1}{2}} + C$

Step 10.2.3

Multiply $- 3$ by $2$ .

$\frac{4}{5} x^{\frac{5}{2}} - 6 x^{\frac{1}{2}} + C$