This program calculates a Riemann sum for a function having three
independent variables, taking the form R=F(x,y,z); that is, it calculates the sum
, approximating the integral
. As with the 2D Riemann program, this allows
the use of expressions in the inner two integrals, allowing integration of non-rectangular
volumes; it is necessary, however, to specify the order of integration. Values for
each sub-region are calculated at the center of the sub-region.
Note: This program uses the calculator's 'Y0', 'Y9', 'Y8', 'Y7'
and 'Y6' graphing functions in it's calculations, and will overwrite any equations
previously stored there.