Question

Select the correct answer.Consider the function & = Scos(2r) - 1Which statement is true about the fanction?

Answer 1

The function is given to be:

$y=\frac{1}{2}\cos\left(2x\right)-1$

We have the following parameters for the sinusoidal function:

$\begin{gathered} Amplitude=\frac{1}{2} \\ Period=\pi \\ Domain=(-\infty,\infty) \\ Midline=(y=-1) \end{gathered}$

Therefore, the correct option is OPTION A.