(sorry i dont know how to do the summation symbol)

double summation, j=1 to 4 and k=2 to 8 (j*k)

is there a specific formula you are supposed to use?

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- Apr 26th 2009, 08:32 PMjlt1209double summation
(sorry i dont know how to do the summation symbol)

double summation, j=1 to 4 and k=2 to 8 (j*k)

is there a specific formula you are supposed to use? - Apr 28th 2009, 03:16 AMMoo
- Apr 28th 2009, 10:15 PMmatheagle
Typo alert.....

In the second summation, since j doesn't depend on k, you can get it out from the sum :

or