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=(1)/(2)\cos\left(2x\right)-1`

We have the following parameters for the sinusoidal function:

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

Therefore, the correct option is OPTION A.