Revision as of 23:46, 17 February 2010 by Swiftscythe (talk | contribs) (KAlgebra - A powerful Calculator for KDE 4)
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KAlgebra is a calculator with symbolic and analysis features that lets you plot 2D and 3D functions as well as to easily calculate mathematical expressions.

When you first open KAlgebra a blank window shows up, this is the main work area for calculus.

Let's get started with a little example of how KAlgebra works, just type:


Then type Return and KAlgebra will show you the result. So far it's easy.

However, KAlgebra is much more powerful than that, it started as a simple calculator, but now it's almost a CAS. You can define variables this way:


And use them normally:


And that will give you the result: 12 You can also define functions:


And then use them:


Which should return 9. You can define a function with as many variables as you want:


The possibilities of defining functions are endless if you combine this withe the piecewise. Let's define the factor function:

fact:=n->piecewise { n=0 ? 1, n=1 ? 1, ? n*fact(n-1) }

Yes! KAlgebra supports recursive functions. Give some values to n, to test it.


KAlgebra has recently started support for symbolic operations, to check it out, just type:




It doesn't work on some complex structures, though. Only basic support so far.

Moreover, KAlgebra has support for differentiation. An example of the syntax:


If you have used KAlgebra, you will have noticed the syntax completion support, which is very helpful.

Another resource that can be useful to learn more about KAlgebra comes with KAlgebra: The Dictionary tab

It contains examples of every function supported by KAlgebra. Maybe the best way to learn how to do things with KAlgebra.

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