(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Find the integral of x(e^-x) evaluated at 1 to inf

2. Relevant equations

int by parts

3. The attempt at a solution

I tried setting u=e^-x and dv=x dx

So then du=-(e^-x)(-1)=e^-x

and v= (x^2)/2

When plugging in uv - integral (v du)

I get another product for the integral which (x^2)/2 * (e^-x)

How do I get out of this?

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# Homework Help: Solving an integral

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