00:01
Hello and welcome.
00:02
We are looking at chapter 5, section 5, problem 29.
00:08
Rest approve a reduction formula for natural log.
00:15
That's what we'll do.
00:25
All right.
00:25
So here's our natural log.
00:28
We're going to use integration by parts.
00:31
So if we just choose u to be everything in that integral, and then dv to be just, what's left behind.
00:52
Then when we take the derivative of you, we have n minus one, or sorry, that's just n.
01:09
I was getting ahead of myself, n times natural log of x, and that's raised to the n minus one.
01:17
Then that's multiplied by the derivative of natural log, which is 1 over x.
01:23
And then v, of course, if we take the antiderivative there, it's just going to be x.
01:29
I don't want to forget my dx here.
01:31
So that's all the pieces we need.
01:34
And we can just apply the formula.
01:38
So that's uv...