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Re: Summation without Mathematica


" mrtommorris" <mor3752 at alltel.net> wrote in message
news:97a7hg$al7 at smc.vnet.net...
> Can someone help me to evaluate the sum from x=1 to infinity for the
> expression x^3(7/8)^x. I know the formulas that will evaluate either
alone.
> But the product is giving me difficulty.

I am not sure what sort of result you want here. The summation from x = 1 to
x = Infinity simply produces a number, 18872.

--
Paul Lutus
www.arachnoid.com





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