Precalculus Examples

$\cos (\frac{5}{7}) f i n d \cos (2 x)$

Step 1

Reorder factors in $\cos (\frac{5}{7}) f i n d \cos (2 x)$ .

$f i n d \cos (\frac{5}{7}) \cos (2 x)$

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