Calculus Examples

$\int 3 x^{2} d x$

Step 1

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

Step 2

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

$3 \int x^{2} d x$

Step 3

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

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

Step 4

Simplify the answer.

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Step 4.1

Rewrite $3 (\frac{1}{3} x^{3} + C)$ as $3 (\frac{1}{3}) x^{3} + C$ .

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

Step 4.2

Simplify.

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Step 4.2.1

Combine $3$ and $\frac{1}{3}$ .

$\frac{3}{3} x^{3} + C$

Step 4.2.2

Cancel the common factor of $3$ .

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Step 4.2.2.1

Cancel the common factor.

$\frac{3}{3} x^{3} + C$

Step 4.2.2.2

Rewrite the expression.

$1 x^{3} + C$

Step 4.2.3

Multiply $x^{3}$ by $1$ .

$x^{3} + C$