प्री-कैलकुलस उदाहरण

$4 \cos^{3} (x) - 3 \cos (x)$

चरण 1

Apply the cosine triple-angle identity.

$\cos (3 x)$

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