- #1

tgt

- 520

- 2

However for three or more variables that method could be tough. How would you do it then? Both for discrete and continuous cases.

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- Thread starter tgt
- Start date

- #1

tgt

- 520

- 2

However for three or more variables that method could be tough. How would you do it then? Both for discrete and continuous cases.

- #2

quasar987

Science Advisor

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For the infinite case, Fubini's theorem for the Lebesgue integral applied to the counting measure gives conditions for when interchanging summation sign is legal.

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