Macro Library calculus
A collection of numerical calculus routines. These are intended to do
numerical calculations where they are specifically needed, not substitute
for entering symbolic derivatives or integrals.
Version 1.0 Oct 19, 2009
calculusdiffquotient(function,variable,a,h)
calculated the difference quotient (f(a+h)-f(a))/h
calculusnumint(func,var,a,b,n,method)
do a numerical integral approximation on interval [a,b] with
n subdivisions using specified method
method = left, right, midpoint, trapezoidal, or simpsons