Question

The graph of y = cos x is transformed to the graph below. Which statementabout the graph is not correct?MA0TTTTЗr21A. The phase shift isis

Answer 1

Function y=cosx

For the given function:

Phase shift: how fat the function is shifted horizontally from the ussual position: In y=cosx the first wave goes to minimum in π and in the given graph in π/2.

Phase shifth:

$\pi-\frac{\pi}{2}=\frac{\pi}{2}$

Midline: In y=cosx the midline is y=0.

In the given graph the midline is in y=1

Period: Measure from one peak to next.

Period: π