00:01
All right, we want to send this area around the y axis and find the volume.
00:06
So first we need to graph y equals lnx.
00:09
Remember that it is the inverse of e to the x.
00:13
So if you wanted to graph e to the x, you could go 1e 01 minus 1 1 1 over e.
00:21
So if you want to do the lnx, you just switch those.
00:27
E1, 1 ,10, 1 over e minus 1.
00:38
E1, that's about right here, 1 0, 1 over e minus 1.
00:45
There's the, it's terrible.
00:48
Let me give that another try.
00:50
Here's the natural log of x.
00:55
X equals 0, that's the y axis.
00:59
Y equals 0, that's the x axis.
01:04
And y equals 1, that's this.
01:07
So we're going to send that around.
01:11
All right, i say let's cut this way...