regression (exponential, linear, logarithmic, logistic, polynomial, power). Xcas has the ability of a scientific calculator that provides show input and writes pretty print. Here is a brief overview of what Xcas is able to do: ĬmathOOoCAS, an plugin which allows formal calculation in Calc spreadsheet and Writer word processing, uses Giac to perform calculations. There is a forum for questions about Xcas. Among other things, Xcas can solve equations (Figure 3) and differential equations (Figure 4) and draw graphs. Giac is used in SageMath for calculus operations. Users can use Giac/Xcas to develop formal algorithms or use it in other software. 
Xcas has compatibility modes with many popular algebra systems like WolframAlpha, Mathematica, Maple, or MuPAD. Giac can be used directly inside software written in C++. Xcas is a user interface to Giac, which is an open source computer algebra system (CAS) for Windows, macOS and Linux among many other platforms. Xcas can solve equation, calculate derivative, antiderivative and more. Xcas calculates fractions without common denominator. Windows, macOS, Linux, FreeBSD, Android, iOSįigure 1.
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