Question

What is the amplitude, period and the phase shift of `y=-5 cos 6x`?

Answer 1

Amplitude `= 5`; Period = `pi/3` ; phase shift `=0`

Explanation:

Comparing with the general equation `y = Acos(Bx+C)+D` here`A=-5 ; B = 6 ; C=0 and D =0` So Amplitude`=|A|= |-5| =5` Period `=2*pi/B= 2*pi/6 =pi/3` Phase shift `= 0`