Every time I try to write a sum or prod. in latex I get something like this: http://data.artofproblemsolving.com/...c0e633e009.png

any help on how to make the notation correct?

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- October 2nd 2010, 07:32 PMintegralsummation problem.
Every time I try to write a sum or prod. in latex I get something like this: http://data.artofproblemsolving.com/...c0e633e009.png

any help on how to make the notation correct? - October 2nd 2010, 08:27 PMProve It
What's wrong with what you've posted?

- October 2nd 2010, 09:41 PMCaptainBlack
- October 4th 2010, 03:14 AMintegral
Thanks Cb, it worked.