Is...
(1)
Now set in (1) instead of ...
Kind regards
This is a familiar integral
Does the addition of 1 change this?
Which is where you got. Let us look at the integral then.
Of course this this the same as
We then get
Edit- LOL at how many people jumped on answering this guy's question. I should quit here there's too many of us!
Just in case a picture helps...
http://www.mathhelpforum.com/math-he...tml#post256175
... is integration by parts, where
... is the product rule.
Straight continuous lines differentiate downwards (integrate up) with respect to x. Choosing legs crossed or un-crossed does for assigning u du and v dv.
Hope it helps, or amuses - but use whatever works for you.
Cheers.
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