00:01
Okay, so we want to answer a few questions about this graph and then write the equation.
00:07
So first up is amplitude.
00:11
Amplitude is the highest point the graph reaches.
00:14
In this case, it's positive one -half.
00:19
The period of this graph, well, we can see one full curve from negative pi over three to positive to pi over three.
00:30
So that's 3 pi over 3 in length or just pi.
00:37
Horizontal shift, that's otherwise known as the phase shift, that tells me my graph isn't starting at 0.
00:46
In this case, it's starting at negative pi over 3.
00:53
Now i want to write the equation.
00:57
So my equation, let me just get the letters that you're, teacher uses, right? okay, so a is the amplitude.
01:09
We have that.
01:11
K is what we call the frequency.
01:13
We don't have that...