The easiest way to do symbolic calculations
DirectMath is a mathematical word processor and easy to use front end to the Mathematica computer algebra system. DirectMath makes use of a powerful pattern matching system to anticipate the calculation you want to perform, so you don't have to learn a programming language or wade through menus to get your work done. Computing integrals, solving differential equations, and performing a whole host of calculation tasks is as easy as selecting the thing you want to calculate and hitting enter or clicking and dragging to launch the calculation you want. Mathematical word processing, drawing tools, and web integration