00:01
Here we integrate by parts, and this time this has to be the u because that i can't integrate quickly.
00:11
And that has to be dv by the x.
00:16
And u times v will be lnx or squared.
00:27
So no change there.
00:28
Integrate x.
00:29
I get x squared over 2 minus the integral of the same thing, x squared over 2.
00:36
And then differentiate you.
00:40
So it's twice.
00:41
Lnx to the 1 if you like times 1 over x, dx.
00:48
And again, don't rush this.
00:54
Make it simpler now.
00:55
So it's one half of x squared.
00:59
Lnx all squared...