I know this has been posted before, but according to this link (posted long time ago from here) http://www.mth.msu.e...io/riemann.html , this is how to program it on older casio graphic cal. however, when i tried to input exactly on prizm i got syntax error. I think the reason why because the program input may have been changed?

btw, if anybody good at programming , i can give you the formula for Riemann sum to help me program it
