삼각법 예제

$2 \cos^{4} (x) - \cos^{2} (x) - 2 \sin^{2} (x) \cos^{2} (x) + \sin^{2} (x)$

단계 1

$2 \cos^{4} (x) - \cos^{2} (x) - 2 \sin^{2} (x) \cos^{2} (x) + \sin^{2} (x)$

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