ABSTRACT
Typical symbolic manipulation programs can simplify algebraic expressions, solve algebraic equations, differentiate functions, integrate many classes of (sometimes extremely complicated) functions, and even evaluate improper integrals, limits, and series. Many developers are adding fancy graphics. Easy-to-learn programming languages are provided, so the user can write special procedures. A user can invent new functions and operators, or write programs for specific chores, which can be added to the already large collection of built-in commands.
