This site links a set of mathematical utilities
developed by me. You need a JavaScript enabled browser to use these utilities. This is what you can do here:
Evaluate a mathematical expression in n variables z1,z2,z3..
Solve a single dimensional function f(z)=0 by
Newton_raphson method.
Minimize a function f(z0,z1,z2..) of n variables
by a random search method. This method takes the search to the global optimum region.
Minimize a function f(z1,z2,z3..) of n variables
by simplex method. This method is efficient near the optimal region.