00:01
Okay, so we want to find a possible formula for this graph.
00:04
To help with this, i'm going to recognize that my basic version is a sign graph because starting at zero, zero, it goes up, comes down, comes back up.
00:13
So this is one complete period here.
00:15
So this is a sign graph we're going to use as our reference.
00:19
To help with that, that's going to follow this format of a times a sign of bx.
00:24
A is going to the amplitude.
00:26
So since i'm starting at zero zero, i'm going up nine, and i'm going down.
00:31
9.
00:32
So that means that a is equal to 9...