00:01
Okay, so again, we have our function, g of t, is 2 plus cosine t.
00:09
And we want to find the average rate of change over the following two intervals.
00:14
So first, over the interval 0 to pi.
00:21
So this is going to be g of pi, the right end point, minus g of 0, over pi minus 0.
00:32
G of pi, cosine of pi is minus 1, so that's 1, and then, cosine of 0 is 1, so 3, pi.
00:45
So we have negative 2 over pi.
00:49
And then over the interval minus pi to pi, well, this is gonna be 0, well, let me just write it down...