Hello everyone.(adsbygoogle = window.adsbygoogle || []).push({});

I have been trying to do those 2 exercices for a while now and I can't get it.. We just started doing Integration by parts (is that how you call it in english?)

here are the problems

1) [tex] \int{ (x^3)(e^{x^2})} [/tex]

and

2) [tex] \int{ \frac{{(x)(e^x)}} { (x+1)^2}} [/tex]

for the 2nd one I tried

u=e^(x^2) dv= x^3

du= 2xe^(x^2) v= (x^4)/4

From there I just get stuck..

For #2, I dont even know how to start it because there are 3 terms.. Can you do that by parts?

I know these are rookies question, but please explain me

thanks :)

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# Homework Help: Integration problems

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