hello,

im stuck on an integration by parts problem:

here is what i have so far

,

,

i know that

but im not sure how to continue...

could someone show me?

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- Jun 28th 2010, 04:33 AMabsvaluestuck on integration by parts
hello,

im stuck on an integration by parts problem:

here is what i have so far

,

,

i know that

but im not sure how to continue...

could someone show me? - Jun 28th 2010, 04:37 AMChris L T521
- Jun 28th 2010, 01:16 PMabsvalue
Ok, I think I understand...

Is this correct then?

Note that . Thus

Let and .

Then and .

Using integration by parts:

- Jun 28th 2010, 02:12 PMHallsofIvy
Yes, that is correct.

It is also useful to learn as general rules: and .

Notice that if a= e, ln(a)= ln(e)= 1 so that becomes the "usual" derivative and anti-derivative of .