What kind of Integration to use

[jdawg]

Homework Statement

∫(x²)/(e^x/2) dx

Homework Equations

The Attempt at a Solution

I'm not completely sure where to start on this one. I don't see any sort of u substitution working, would integration by parts be a good idea? Maybe let u=x² and dv=(1/e^x/2) ?

 

[Ray Vickson]

Homework Statement

∫(x²)/(e^x/2) dx

Homework Equations

The Attempt at a Solution

I'm not completely sure where to start on this one. I don't see any sort of u substitution working, would integration by parts be a good idea? Maybe let u=x² and dv=(1/e^x/2) ?

Don't ask: just go ahead and try it for yourself!

BTW: you should always write $1/e^{ax}$ as $e^{-ax}$ whenever $a > 0$.

 

[jdawg]

Don't ask: just go ahead and try it for yourself!

BTW: you should always write $1/e^{ax}$ as $e^{-ax}$ whenever $a > 0$.

Haha ok, thanks! It doesn't look as scary now with that e rewritten :)