Xcas

Here is a brief overview of what Xcas is able to do:[13]

• Xcas has the ability of a scientific calculator that provides show input and writes pretty print
• Xcas works also as a spreadsheet;[14]
• computer algebra;
• 2D geometry in the plane;[15]
• 3D geometry in space;[15]
• spreadsheet;[14]
• statistics;
• regression (exponential, linear, logaritmic, logistic, polynomial, power)
• programming;[16]
• solve equations even with complex roots;
• solving trigonometric equations
• solve differential equations[17][18] (watch illustration);
• draw graphs;
• calculate differential (or derivative) of functions;
• calculate antiderivative of functions;
• calculate area and integral calculus;
• linear algebra[19]

• propfrac(42/15) = 2 + 4/5
• Calculate square root = sqrt(4) = 2
• Draw a vertical line in coordinate system: line(${\displaystyle x}$ =1) = the vertical line ${\displaystyle x}$=1
• Draw graph: plot(function)
• Calculate average: mean([3, 4, 2]) = 3
• Calculate variance: variance([3, 4, 2]) = 2/3
• Calculate standard deviation: stddev([3, 4, 2]) = sqrt(2/3)
• Calculate determinant of a matrix: det([[1,2], [3,4]]) = -2
• Calculate local extrema of a function: extrema(-2*cos(${\displaystyle x}$)-cos(${\displaystyle x}$)^2,${\displaystyle x}$) = [0], [pi]
• Calculate cross product of two vectors: cross([1, 2, 3], [4, 3, 2]) = [-5, 10, -5]
• Calculate permutations: nPr()
• Calculate combinations: nCr()
• Solve equation: solve(equation,${\displaystyle x}$)
• Factoring Polynomial: factor(polynomial,${\displaystyle x}$) or cfactor(polynomial,${\displaystyle x}$)
• Differentiation of function: diff(function,${\displaystyle x}$)
• Calculate integral aka antiderivative: int(function,${\displaystyle x}$)
• Calculate definite integral aka area under curve: int(function,${\displaystyle x}$,lowerlimit,upperlimit)
• Calculate definite integral aka solid of revolution - finding volume by rotation (around the ${\displaystyle x}$ axis): int(pi*function^2,${\displaystyle x}$,lowerlimit,upperlimit)
• Calculate definite integral aka Solid of Revolution - finding volume by rotation (around the ${\displaystyle y}$ axis) for a decreasing function: int(2*pi*${\displaystyle x}$*function,${\displaystyle x}$,lowerlimit,upperlimit)
• Separation of variables: split((${\displaystyle x}$+1)*(${\displaystyle y}$-2),[${\displaystyle x}$,${\displaystyle y}$]) = [${\displaystyle x}$+1,${\displaystyle y}$-2]
• desolve differential equation (right side of Differential Equation written as ${\displaystyle y'}$or ${\displaystyle y''}$): desolve(differential equation,${\displaystyle y}$)

or read more commands and features here: http://www-fourier.ujf-grenoble.fr/~parisse/giac/cascmd_en.pdf

• Microsoft Windows[20]

• Apple macOS (only 32 bit version)
• Linux/Unix[21][22]

Xcas and Giac are open-source projects [23] developed by Bernard Parisse[24] et al. at the Joseph Fourier University of Grenoble (Isère), France, since 2000.[5] Xcas and Giac are based on experiences gained with Parisse's former project Erable.[25] In 2013 the mathematical software Xcas was also integrated into GeoGebra's CAS view.[26] Since 2013 there are videos showing how Xcas works.[23][27]

Pocket CAS and CAS Calc P11 utilize Giac.

The system was also chosen by Hewlett-Packard as the CAS for their HP Prime calculator, which utilizes the Giac/Xcas 1.4.9 engine under a dual-license scheme.

• Comparison of computer algebra systems

• De Graeve, Renée (2018-01-19) [2013]. "Symbolic computation and Mathematics with the calculator HP Prime" (PDF). Translated by Lecointre, Jean Michel. Retrieved 2018-01-22.
• Halkos, George (2015-04-25) [2014]. "Perspectives on integrating a computer algebra system into advanced calculus curricula" (PDF). Retrieved 2019-09-06.
• Read more commands here: http://www-fourier.ujf-grenoble.fr/~parisse/giac/cascmd_en.pdf
• http://www.mathsaulycee.sitew.com/fs/premiere_s/8uoow-xcas_commande_utile.pdf (French)
• http://briand-lyc.spip.ac-rouen.fr/IMG/pdf/xcas_fonctions.pdf (French)
• Barnard Parisse: Mathématiques avec Xcas. (French)
• Dr. Fabian Reimers (editor): "Computeralgebra-Rundbrief Nr. 62: Fachgruppe Computeralgebra" (PDF). (German)

• Official website
• Use Xcas online in your web browser