Trigonometry Examples

$f (x) = \cos^{2} (x) = \frac{1 + \cos (2 x)}{2}$

Step 1

Graph.

$f (x) = \cos^{2} (x) = \frac{1 + \cos (2 x)}{2}$

Step 2

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