Calculus Examples

$\int \frac{2}{\sqrt{x}} d x$

Step 1

This integral could not be completed using u-substitution. Mathway will use another method.

Step 2

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

$2 \int \frac{1}{\sqrt{x}} d x$

Step 3

Apply basic rules of exponents.

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Step 3.1

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

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

Step 3.2

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

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

Step 3.3

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

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Step 3.3.1

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

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

Step 3.3.2

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

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

Step 3.3.3

Move the negative in front of the fraction.

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

Step 4

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

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

Step 5

Simplify the answer.

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Step 5.1

Rewrite $2 (2 x^{\frac{1}{2}} + C)$ as $2 \cdot 2 x^{\frac{1}{2}} + C$ .

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

Step 5.2

Multiply $2$ by $2$ .

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