00:01
Okay, this i want to integrate by parts.
00:03
Parts requires a product of two items.
00:06
Here, only one.
00:08
So what we do is times this by one.
00:13
Now it's a product.
00:15
Now what we do is this is going to be your u this time.
00:22
And this will be your dv by dx.
00:28
Now, i apply the parts formula.
00:34
So we get u times v.
00:37
So it's ln 2x.
00:40
That's the u.
00:43
Define v by integrate 1.
00:46
I get x integral of x again and then d u by d x and differentiate this item here.
00:58
And i get 2 over 2x.
01:03
For l n integration, for l n differentiation is 1 over the function...