yacas

Start calculator

$ yacas

$ yacas -c "[Solve(x^2-4==0,x)]"

$ yacas [script.ys]

$ yacas -p

yacas [-c expr] [-p] [options] [file]

yacas (Yet Another Computer Algebra System) is a free symbolic mathematics program that provides an interactive environment for algebraic computation. It supports symbolic manipulation of expressions, equation solving, calculus operations including derivatives and integrals, and linear algebra.
The system includes its own scripting language for defining custom functions and mathematical procedures. It can be used interactively at the command line or by running script files, and supports both exact symbolic computation and numerical evaluation.

-c EXPR

Evaluate expression.

Plain output.

Scripts directory.

Show help.

Learning curve. Own syntax. Not as full as Mathematica.

Yacas (Yet Another Computer Algebra System) was created as a free computer algebra system.

maxima(1), octave(1), bc(1)