Hi Fellas Im stuck on the following question can anyone help? Thanks Evaluate ∑^n r=1 (9-3r) ∑_(r=1)^n▒〖(9-3r)〗 regards John
Last edited by JCM133; Aug 17th 2010 at 06:19 AM.
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Originally Posted by JCM133 Hi Fellas Im stuck on the following question can anyone help? Thanks Evaluate ∑^n r=1 (9-3r) ∑_(r=1)^n▒〖(9-3r)〗 regards John $\displaystyle \sum^{n}_{r=1}9-3\sum^{n}_{r=1}r$ Recall the summation formulas.
Thanks Mathsaddict
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