00:01
We have the function defined as 3 cosine of 2x and then minus 4.
00:11
So the first thing i'm going to do for my graph is talk about how we're shifting down 4 from this piece right here.
00:21
So instead of being wrapped around the x -axis like we typically are, we need to go down 4 units.
00:27
And i like to put like a little line right here to say, hey, we're going to be across that.
00:34
Because the next thing i'm going to point out is this 3 is my amplitude from that point needs to go up 3 and then also down 3 from that.
00:48
And because it's cosine, i'm assuming you recognize cosine right away, that you are starting off of that midline, and then you go down and then back up and then here.
01:02
Now, the real question is, what's the end of that period? well, typically, the period ends at 2 pi radiance...