Precalculus Examples

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

Step 1

Apply the distributive property.

$\frac{1}{2} \cdot 1 + \frac{1}{2} (- \cos (2 x))$

Step 2

Multiply $\frac{1}{2}$ by $1$ .

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

Step 3

Combine $\frac{1}{2}$ and $\cos (2 x)$ .

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