Question

Describe the phase shift and determine the value of h in this translation: y=cos (x- 3pi/2)

a. pi units to the left; h=-pi

b. 1 unit to the left; h=-1

c. pi units to the right; h =pi

d. 3pi/2 units to the right; h= 3pi/2

Answer 1

The "parent" function is y=cos(x). y=cos(x-3π/2) is a right (phase) shift of 3π/2 radian units, answer d.