Double integral

edit: doesn't matter, solved!

(edited 9 years ago)

Original post by Implication

I have the below integral

\displaystyle \iint _{\infty} dxdp xf(x,p)

(i.e. over all x, p)

Without knowing the function f, is there a way to rewrite the integral as something involving the following?

\displaystyle \iint _{\infty} dxdp f(x,p)

I've had a play with integrating by parts but not getting anywhere...

Cheers

what are the limits? or the integrating region?

what are the limits? or the integrating region?

x and p both from neg infinity to infinity, i've solved the problem without doing this now though so don't worry! thanks anyway :smile:

Original post by Implication

x and p both from neg infinity to infinity, i've solved the problem without doing this now though so don't worry! thanks anyway :smile:

not a problem

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