I would like an equation solving calculator for my math website. I need pretty good functionality so that users can enter an equation with basic arithmetic as well as trigonometry, square roots, and exponents. The program would then return the steps used in solving the equation. Those steps, along with the solution, would be displayed in graphical form as mathematical expressions.
Please only bid if you have math experience and feel confident you can design an equation solver that works well for almost any standard equation.