00:01
We want to find the area of the region enclosed by these two functions.
00:04
The first one is in blue, it's y equals cos x, and the second function is in green.
00:09
Y equals x plus 2, sine x to the 4.
00:13
So we find by using a graph and calculator that there is actually two enclosed regions, the first one here, and the second one over here.
00:22
So we want to find the total area, so we're going to be adding these two regions.
00:27
Area equals area 1 plus area so we're going to determine each of these areas separately.
00:38
Area 1 is equal to what we're going to do in integral.
00:42
So i didn't say which is area 1.
00:44
We're going to consider the leftmost region to be area 1.
00:49
So we're going to be integrating from x equals negative 1 .912 to x equals negative 1 .224.
01:00
It's going to be our top function minus our bottom function, the top function is the green one in this region.
01:07
So this is x.
01:15
Okay...