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I'm looking for lightweight, free, Windows, Math software.
Something I can put an expression and get an answer, or graph it.
I tried Euler, but it is quiet complicated and HUGE.
Basic needs:

  1. Expression Based
  2. Supports Variables
  3. Support Functions, User defined and auto loaded.
  4. Supports graphs, 2D. Not really needing 3D.
  5. Supports History.

What do you use? What do you recommend?

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"Math software" is a very general term, which encompasses computer algebra systems like Maxima and Mathematica, numerical computing environments like Matlab, and basic graphing calculators. It sounds like you want the third kind. –  Rahul Oct 27 '10 at 7:57
Should be community wiki! –  vonjd Oct 27 '10 at 8:55
It sounds like you're not primarily focused on symbolic math, but yacas is a lightweight symbolic math program: –  Ben Crowell Jan 5 '12 at 17:30
Is "Wiscy" still around? (I have a version which is stil working) It seems to be designed as just what you are asking for... ("Pocket"-calculator like but expressions, variables, functions definable, graphics - all in one simple executable). (update: seems no more supported but possibly on some web-archive. see!topic/bit.listserv.calc-ti/… ) –  Gottfried Helms Dec 4 '13 at 9:24

10 Answers 10

I'm also interested in answers to this questions!

There is a Power Calculator from MS, but has a lot to be desired.

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It used to work for me, but recently, for some reason it does not display Answers or History at all. That is why I'm looking –  Ayman Oct 27 '10 at 7:52
According to powerCalc sin(1/x) is unbounded at x=0... –  AD. Oct 27 '10 at 11:17

I haven't personally used CPMP-Tools, but I've heard it referred to as a free CAS.

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Graphmatica does a fairly decent job at plotting functions. Not very powerful, but it can graph a lot of functions and their derivatives and such.

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In your position, I'd just use an interactive Python shell with Matplotlib. (But then, I'm a computer science guy first and foremost.)

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I don't see it user-friendly for mathematics. –  Vojtech R. Oct 27 '10 at 8:38
@Vojtech It's pretty good for basic plotting. It has a syntax that is pretty much identical to matlab. A lot of people (me included) use it to plot figures for papers –  crasic Oct 27 '10 at 9:09

As calculator wxMaxima (screenshots) with export to png and LaTeX syntax.

For playing with graphs I use GeoGebra with export to png, eps, pdf...

For some special cases Wolfram|Alpha.

And also MS Excel.

And also a normal calculator - is often faster than PC programs ;)

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I have also found SpeQ Mathematics.

It is very lightweight, starts quickly and has some good functions.

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You can try PARI/GP

I am more fan of sage but currently it doesn't natively support your OS, you can try it in a virtual machine.

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SAGE can also be run online be creating an account at (which works wonderfully, by the way) –  Fredrik Meyer Jan 5 '12 at 16:45

I'm not sure if it supports user defined functions but I've found Microsoft Mathematics to be extremely useful.

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Also, try DMelt program for scientific computations. It is 100% Java, runs on windows and free.

jPort also runs on Windows (Java) and can install about 10 free math programs that run on Windows.

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Also, try GAP, an open-source system for discrete computational algebra.

To install in on Windows, I recommend to use the .exe installer downloadable from this link which always points to the latest official GAP release.

Documentation on GAP is included in the distribution and is also available online. In particular, see the GAP Tutorial and GAP Programming Language.

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