hello everybody

i want to know that if we have a multivariable function f(x,y)

then

wen is this true ...are there any conditions for it or is it always true...

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- August 25th 2009, 05:00 AMcorleone2463order of integration..the core
hello everybody

i want to know that if we have a multivariable function f(x,y)

then

wen is this true ...are there any conditions for it or is it always true... - August 25th 2009, 05:03 AMProve It
- August 25th 2009, 05:18 AMnirax
see Fubini's theorem in wikipedia.

- August 25th 2009, 05:27 AMcorleone2463
you people are all talking about the definite integrals where we integrate a function over a defined 2-d region in this case (fubini theorem)..im talking about the indefinite integrals or the integrals like the one in convolution of three signals (functions) ..x(t)*y(t)*z(t).....there the limits are not defined the way we do in fubini theorem to convert a multiple integral into iterated single integrals .....

- August 25th 2009, 05:36 AMnirax
fubini's thm is concerned with a general measure space .. no issue of definite or indefinite (which is only in real cases) enter ... read the article in WP once.

- August 25th 2009, 11:39 AMcorleone2463
ok thankyou nirax for ur help .... ill read the article asap ...and discuss then