Algebra Examples

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

The provided equation is not an identity.

$\cos^{2} (x) = \frac{1 - \cos (2 x)}{2}$ is not an identity

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