Ok Great, I now understand and have applied your suggestion. Thank you kindly.

-SH

Thanks for the quick reply. When I enter your alternative it approximates to 0. The command that generated the expression I posted was eval(rightsum(sin*x, x = 0 .. (1/4)*Pi, 10))

if that helps. The trusty TI-83 gives me .3205.

Hey Folks,
I've got a pretty simple question here. I use maple to check my work and I'm wondering how to get a numerical approximate of a Riemann sum containing a trig function. I don't want sin in the answer. For example:
(1/40)*Pi*(Sum((1/40)*sin*i*Pi, i = 1 .. 10))
approximates to 0.33928 sin. Any help would be greatly appreciated. Cheers.

-SH