PROJECT HAS BEEN MOVED TO GIT HUB http://github.com/lostparticles/symbolicalgebra


Project Description
Algebraic calculation system implemented purely in C#.


I was inspired by the Ginac project http://www.ginac.de to make this library

I've tested the library based on Maxima project http://maxima.sourceforge.net/ (many thanks for the people behind this project]

Silverlight

I am please to say that I've made a silverlight console
http://algebra.lostparticles.net



so beside using the console in the download, you can test quickly using the silverlight version.
enjoy this fine release :)


How to do calculation in your .net application

  • Reference the dll into your project.

First Method:

Use Parse Method
var p = SymbolicVariable.Parse("x+x*y+(a-b)^3");
Console.WriteLine(p.ToString());

Second Method

  • Instantiate a symbolic variable object with the symbol name.
  • do calculations like the normal variables.
  • result is obtained textual when you call ToString()
SymbolicVariable x = new SymbolicVariable("x");
SymbolicVariable y = new SymbolicVariable("y");
SymbolicVariable z = new SymbolicVariable("z");
SymbolicVariable t = new SymbolicVariable("t");            
SymbolicVariable Zero = new SymbolicVariable("0");
SymbolicVariable One = new SymbolicVariable("1");
SymbolicVariable Two = new SymbolicVariable("2");
SymbolicVariable Three = new SymbolicVariable("3");
SymbolicVariable Four = new SymbolicVariable("4");
var a = x+y;
var b = x-y;
var ab = a*b;
Console.WriteLine(ab.ToString());

What about derivatives?

Derivation has been implemented into the library.
Below is a code borrowed from the unit test project.

var a = x.Power(2).Differentiate("x");
Assert.AreEqual("2*x", a.ToString());

var b = (x.Power(2) + x.Power(3) + x.Power(4)).Differentiate("x");
Assert.AreEqual("2*x+3*x^2+4*x^3", b.ToString());

var c = (x.Power(2) * y.Power(3) * z.Power(4));
var dc_z = c.Differentiate("z");
Assert.AreEqual("4*x^2*y^3*z^3", dc_z.ToString());

var d = (x.Power(3) * y.Power(-40))+(y.Power(3)*z.Power(-1));
var dd_y = d.Differentiate("y");
Assert.AreEqual("-40*x^3/y^41+3*y^2/z", dd_y.ToString());

var e = x.RaiseToSymbolicPower(2*y);
var de_x = e.Differentiate("x");
Assert.AreEqual("2*x^(2*y-1)*y", de_x.ToString());

Function derivation

I've added function derivation in this release in the known functions
which means you can now derive sin and cos functions
but I think I missed other functions (please test and tell me :) )

Quantity System

If you liked this library, make sure you review its usage into Quantity System Calculator http://QuantitySystem.Codeplex.com which implement symbolic and numerical calculations by blending them together with the aid of units.

Last edited Mar 11, 2015 at 12:31 AM by IBlueSun, version 11