00:01
All you need in this problem is to recognize that you started at 0 6.
00:06
It goes up to 8.
00:08
I really don't care what the x value is.
00:11
It goes down to 4.
00:14
I'm just double checking so i'm looking closely.
00:17
But then what i also care about is that it ends back at 8 6.
00:23
So that's one cycle there.
00:25
So going across is telling me that the period is equal to 8.
00:30
I should write period minus zero.
00:34
So the period's length is 8.
00:36
The amplitude is going from 8 down to 6.
00:40
So the amplitude is 2.
00:43
I guess i should write out that's 8 minus 6 is how i found that.
00:46
And then the midline was the starting value that we started at y equals 6.
00:53
So one more thing is this period isn't actually used in the equation.
00:57
It's 2 pi divided by 8 which 2 over 8 reduces to pi over 4.
01:03
So the equation whether it's y equals or f of x because i don't it says which equation represents i don't see anything.
01:10
I would use f of x.
01:12
That's just me though but any notation...