Calculate the percentage of any number out of any number. Add percentage to an amount or calculate a discount percentage. Free math homework help from basic math to algebra, geometry and beyond. Students, teachers, parents, and everyone can find solutions
XLOPTIM, The leading optimization solver for Microsoft Excel. XLOPTIM solves your operational problems by providing the efficiency of LocalSolvers optimization engine directly inside your Excel worksheets.
Math Mechanixs is a general purpose math program with a Math Editor for solving mathematical problems and taking notes, extensive Function Library and Function Solver, 2D and 3D Graphing, and a Calculus Utility with integration and differentiation.