Maple

Maple is an interactive mathematical problem-solving and programming environment featuring symbolic, numeric, and visualization facilities. Intelligent symbolic algorithms remove mechanical errors that cost time and impede comprehension.  The product includes thousands of mathematical functions covering a variety of disciplines from basic algebra and precalculus, to calculus and differential equations. A wide range of modeling an simulation tools for engineering, finance, physics are part of the application. It also includes tools for web publishing, exporting to Word, LaTeX, and MathML.