The sinusoid y=3cos(x+3)-2 has which of the following?
a. phase shift of 3 to the right
b. phase shift of 3 to the left
c. vertical shift up of 2
d. horizontal stretch by factor of 3
math - Reiny, Thursday, August 4, 2011 at 10:08pm
you mean compared to y = 3cos x ??
then it would be b)