- #1

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## Homework Statement

As part of a problem I need to evaluate,

[itex]\int[/itex][itex]^{\infty}_{0}[/itex]x

^{2}e

^{-[itex]\lambda[/itex]x2}

## Homework Equations

∫e

^{-λx2}= 1/2 [itex]\sqrt{\pi/\lambda}[/itex]

( with integration limits from 0 to ∞ )

## The Attempt at a Solution

I've tried integrating by parts, also tried changing variables and combinations of these. been stuck on this integral for a couple of days, would appreciate some help.