Editing Computer algebra system (section)

==Types of expressions==
The expressions manipulated by the CAS typically include [[polynomial]]s in multiple variables; standard functions of expressions ([[Trigonometric functions|sine]], [[exponential function|exponential]], etc.); various special functions ([[gamma function|Γ]], [[Riemann zeta function|ζ]], [[error function|erf]], [[Bessel function]]s, etc.); arbitrary functions of expressions; optimization; derivatives, integrals, simplifications, sums, and products of expressions; truncated [[series (mathematics)|series]] with expressions as coefficients, [[matrix (mathematics)|matrices]] of expressions, and so on. Numeric domains supported typically include [[floating-point arithmetic|floating-point representation of real numbers]], [[integer]]s (of unbounded size), [[complex number|complex]] (floating-point representation), [[interval arithmetic|interval representation of reals]], [[rational number]] (exact representation) and [[algebraic number]]s.