Question

Determine the period, amplitude, and phase shift of
`f(x)=3cos2\left \{ x-(\pi )/(4)]+1`

b) List the five critical points for the first cycle. (3 marks)

Use this information to sketch the graph off(x) for two

complete cycles. Determine
`(1)/(4)` wave and starting point.

Clearly label the scale on both axes. (3 marks)

Answer 1

->period =
`(2\pi )/(2) =\pi`

->a=3, shift
`(\pi )/(4)`

->right 1 unit up

Rest are shown in graph