Yacas

Yacas is, as it's name suggest, yet another computer algebra system. Things implemented include: arbitrary precision, rational numeric, vector, complex, and matrix computations (including inverses and determinants and solving matrix equations), derivatives, solving, Taylor series, numerical solving (Newtons method), and a lot more non-mathematical algorithms. The language natively supports variables and user-defined functions. There is basic support for univariate polynomials, integrating functions and tensor calculations. You can get Yacas at 

    http://www.xs4all.nl/~apinkus/yacas.html
© 1998–2002 Joris van der Hoeven
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