Calculus Examples

$f (x) = \frac{2}{3 x^{2}} + \frac{5}{4 x^{3}} + \sqrt{x}$

Step 1

The function $F (x)$ can be found by finding the indefinite integral of the derivative $f (x)$ .

$F (x) = \int f (x) d x$

Step 2

Set up the integral to solve.

$F (x) = \int \frac{2}{3 x^{2}} + \frac{5}{4 x^{3}} + \sqrt{x} d x$

Step 3

Split the single integral into multiple integrals.

$\int \frac{2}{3 x^{2}} d x + \int \frac{5}{4 x^{3}} d x + \int \sqrt{x} d x$

Step 4

Since $\frac{2}{3}$ is constant with respect to $x$ , move $\frac{2}{3}$ out of the integral.

$\frac{2}{3} \int \frac{1}{x^{2}} d x + \int \frac{5}{4 x^{3}} d x + \int \sqrt{x} d x$

Step 5

Apply basic rules of exponents.

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Step 5.1

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

$\frac{2}{3} \int {(x^{2})}^{- 1} d x + \int \frac{5}{4 x^{3}} d x + \int \sqrt{x} d x$

Step 5.2

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

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Step 5.2.1

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

$\frac{2}{3} \int x^{2 \cdot - 1} d x + \int \frac{5}{4 x^{3}} d x + \int \sqrt{x} d x$

Step 5.2.2

Multiply $2$ by $- 1$ .

$\frac{2}{3} \int x^{- 2} d x + \int \frac{5}{4 x^{3}} d x + \int \sqrt{x} d x$

Step 6

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

$\frac{2}{3} (- x^{- 1} + C) + \int \frac{5}{4 x^{3}} d x + \int \sqrt{x} d x$

Step 7

Since $\frac{5}{4}$ is constant with respect to $x$ , move $\frac{5}{4}$ out of the integral.

$\frac{2}{3} (- x^{- 1} + C) + \frac{5}{4} \int \frac{1}{x^{3}} d x + \int \sqrt{x} d x$

Step 8

Apply basic rules of exponents.

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Step 8.1

Move $x^{3}$ out of the denominator by raising it to the $- 1$ power.

$\frac{2}{3} (- x^{- 1} + C) + \frac{5}{4} \int {(x^{3})}^{- 1} d x + \int \sqrt{x} d x$

Step 8.2

Multiply the exponents in ${(x^{3})}^{- 1}$ .

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Step 8.2.1

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

$\frac{2}{3} (- x^{- 1} + C) + \frac{5}{4} \int x^{3 \cdot - 1} d x + \int \sqrt{x} d x$

Step 8.2.2

Multiply $3$ by $- 1$ .

$\frac{2}{3} (- x^{- 1} + C) + \frac{5}{4} \int x^{- 3} d x + \int \sqrt{x} d x$

Step 9

By the Power Rule, the integral of $x^{- 3}$ with respect to $x$ is $- \frac{1}{2} x^{- 2}$ .

$\frac{2}{3} (- x^{- 1} + C) + \frac{5}{4} (- \frac{1}{2} x^{- 2} + C) + \int \sqrt{x} d x$

Step 10

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

$\frac{2}{3} (- x^{- 1} + C) + \frac{5}{4} (- \frac{1}{2} x^{- 2} + C) + \int x^{\frac{1}{2}} d x$

Step 11

By the Power Rule, the integral of $x^{\frac{1}{2}}$ with respect to $x$ is $\frac{2}{3} x^{\frac{3}{2}}$ .

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

Step 12

Simplify.

$- \frac{2}{3 x} - \frac{5}{8 x^{2}} + \frac{2}{3} x^{\frac{3}{2}} + C$

Step 13

The answer is the antiderivative of the function $f (x) = \frac{2}{3 x^{2}} + \frac{5}{4 x^{3}} + \sqrt{x}$ .

$F (x) =$ $- \frac{2}{3 x} - \frac{5}{8 x^{2}} + \frac{2}{3} x^{\frac{3}{2}} + C$