Prakalkulus Contoh

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

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

Langkah 1

Apply the cosine triple-angle identity.

\cos (3 x)

$\cos (3 x)$

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

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