write an equation of the sine function with amplitude 3,period 3pi/2, and phase shift pi/4
a)y=3sin(3x/2 - pi/4)
b)y=-3sin(4x/3 - pi/4)
c)y=-3sin(3x/2 - 3pi/8)
d)y=3sin(4x/3 - pi/3)
, with B and C positive.
has amplitude , period , and phase shift ,
The shift is right if is positive and left if
is negative.
We'll test each possible answer:
a)
has amplitude ,
period
and phase shift .
b)
has amplitude ,
period
and phase shift .
c)
has amplitude ,
period
and phase shift .
d)
has amplitude ,
period
and phase shift
So (d) is the only correct choice.
Edwin