This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
 Manipulating Equations Mathematica's symbolic architecture allows it to represent any equation as a symbolic expression that can be manipulated using any of Mathematica's powerful collection of symbolic operations. Reduce — general algebraic reduction of equations, inequalities, etc.      Simplify — simplify each side of an equation Series — series expand each side of an equation N — evaluate each side of an equation numerically      LogicalExpand — expand out logical combinations of equations Thread — convert {a, b}{u, v} to {au, bv} CoefficientArrays — convert equations to matrices      ReplaceAll (/.) — substitute equation solutions into any expression TUTORIALS Solving Equations Simplifying Algebraic Expressions Simplifying with Assumptions Putting Expressions into Different Forms Solving Equations Involving Power Series MORE ABOUT Equation Solving Polynomial Manipulation Polynomial Systems