Computer algebra systems

This article page is a stub, please help by expanding it.

Computer algebra systems are computer programs that not only perform numeric computations but are also capable of symbolic computations. They can be given inputs like $x+x+{\sqrt {x}}$ and respond with alternate forms like $2x+{\sqrt {x}}$ or $(2{\sqrt {x}}+1){\sqrt {x}}$, find the root (in this example, $x=0$), compute derivatives, indefinite integrals, global minimums, series representations, differential geometric curves, etc. And of course they can also handle explicit inputs like $4+{\sqrt {2}}$.

The most commonly-used computer algebra systems on the OEIS are Maple, Mathematica, and PARI/GP. Other systems used are Magma and Sage.