Integration

[fallow fossil]

what will be best method to solve this please send with full solution
||answer is : n!/2||

[tidal shale]

prob a sub and integration by parts will do it

[hybrid crag]

yeah, ||Let x^2=u, we get du=2xdx, the integral tranforms to
1/2(int_{0}->{inf} u^n e^(-u) du) =1/2 Gamma(n+1)=n!/2||

[tidal shale]

you should stop annoying me

[dusky forge]

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