Precalculus Examples

$\sqrt{2 - 2 \cos (x)}$

Step 1

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

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

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$