00:01
So in this question, we have y equals 2 times the sign of pi x minus pi over 2.
00:07
And we want to find the amplitude, period, and phase shift.
00:13
So here's our fact.
00:15
If we ever have something that is of the form, y equals a times the sign of the quantity of bx minus c, this will always have an amplitude of a.
00:33
The period will always be found by finding 2 pi divided by b, and my phase shift will always be found by just c over b.
00:51
So if i have y equals 2 times the sign of pi x minus pi over 2, what do i have? well, my amplitude is a, and my a this time is just 2.
01:13
How about my period? my period is 2 pi divided by my b.
01:20
B is the coefficient in front of x.
01:24
That coefficient this time is pi...