Calculus Examples

$f (x) = x^{\frac{3}{4}} + 8 \sqrt[3]{x} + 3 x^{5}$

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.

$F (x) = \int x^{\frac{3}{4}} + 8 \sqrt[3]{x} + 3 x^{5} d x$

Step 3

Split the single integral into multiple integrals.

$\int x^{\frac{3}{4}} d x + \int 8 \sqrt[3]{x} d x + \int 3 x^{5} d x$

Step 4

By the Power Rule, the integral of $x^{\frac{3}{4}}$ with respect to $x$ is $\frac{4}{7} x^{\frac{7}{4}}$ .

$\frac{4}{7} x^{\frac{7}{4}} + C + \int 8 \sqrt[3]{x} d x + \int 3 x^{5} d x$

Step 5

Since $8$ is constant with respect to $x$ , move $8$ out of the integral.

$\frac{4}{7} x^{\frac{7}{4}} + C + 8 \int \sqrt[3]{x} d x + \int 3 x^{5} d x$

Step 6

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[3]{x}$ as $x^{\frac{1}{3}}$ .

$\frac{4}{7} x^{\frac{7}{4}} + C + 8 \int x^{\frac{1}{3}} d x + \int 3 x^{5} d x$

Step 7

By the Power Rule, the integral of $x^{\frac{1}{3}}$ with respect to $x$ is $\frac{3}{4} x^{\frac{4}{3}}$ .

$\frac{4}{7} x^{\frac{7}{4}} + C + 8 (\frac{3}{4} x^{\frac{4}{3}} + C) + \int 3 x^{5} d x$

Step 8

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

$\frac{4}{7} x^{\frac{7}{4}} + C + 8 (\frac{3}{4} x^{\frac{4}{3}} + C) + 3 \int x^{5} d x$

Step 9

By the Power Rule, the integral of $x^{5}$ with respect to $x$ is $\frac{1}{6} x^{6}$ .

$\frac{4}{7} x^{\frac{7}{4}} + C + 8 (\frac{3}{4} x^{\frac{4}{3}} + C) + 3 (\frac{1}{6} x^{6} + C)$

Step 10

Simplify.

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Step 10.1

Simplify.

$\frac{4 x^{\frac{7}{4}}}{7} + 6 x^{\frac{4}{3}} + 3 (\frac{1}{6} x^{6}) + C$

Step 10.2

Simplify.

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Step 10.2.1

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

$\frac{4 x^{\frac{7}{4}}}{7} + 6 x^{\frac{4}{3}} + 3 \frac{x^{6}}{6} + C$

Step 10.2.2

Combine $3$ and $\frac{x^{6}}{6}$ .

$\frac{4 x^{\frac{7}{4}}}{7} + 6 x^{\frac{4}{3}} + \frac{3 x^{6}}{6} + C$

Step 10.2.3

Cancel the common factor of $3$ and $6$ .

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Step 10.2.3.1

Factor $3$ out of $3 x^{6}$ .

$\frac{4 x^{\frac{7}{4}}}{7} + 6 x^{\frac{4}{3}} + \frac{3 (x^{6})}{6} + C$

Step 10.2.3.2

Cancel the common factors.

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Step 10.2.3.2.1

Factor $3$ out of $6$ .

$\frac{4 x^{\frac{7}{4}}}{7} + 6 x^{\frac{4}{3}} + \frac{3 x^{6}}{3 \cdot 2} + C$

Step 10.2.3.2.2

Cancel the common factor.

$\frac{4 x^{\frac{7}{4}}}{7} + 6 x^{\frac{4}{3}} + \frac{3 x^{6}}{3 \cdot 2} + C$

Step 10.2.3.2.3

Rewrite the expression.

$\frac{4 x^{\frac{7}{4}}}{7} + 6 x^{\frac{4}{3}} + \frac{x^{6}}{2} + C$

Step 10.3

Reorder terms.

$\frac{4}{7} x^{\frac{7}{4}} + 6 x^{\frac{4}{3}} + \frac{1}{2} x^{6} + C$

Step 11

The answer is the antiderivative of the function $f (x) = x^{\frac{3}{4}} + 8 \sqrt[3]{x} + 3 x^{5}$ .

$F (x) =$ $\frac{4}{7} x^{\frac{7}{4}} + 6 x^{\frac{4}{3}} + \frac{1}{2} x^{6} + C$