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Graphmatica 2.0e

(December 6, 2005)

Windows 2000/2003/9x/XP / Shareware / 3,248 downloads

Graphmatica is a powerful equation plotter with numerical and calculus features. Graph Cartesian functions, relations, and inequalities, plus polar, parametric, and ordinary differential equations. Up to 25 graphs on screen at once. Offers copy to clipboard (bitmap and WMF), Button Bar, on-line help and demo files. In summary, a great tool for students and teachers of anything from high-school algebra through college calculus.

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Publisher
kSoft, Inc.
Homepage
Graphmatica
Latest Changes
- Added 2 more free variables, j and k, to make it easier to parameterize complicated equations

- Fixed crash graphing ODEs that had their highest differential raised to an even power, e.g. dy^2 = x

- Added Heaviside step function: h(x) = 0, for x < 0, 1/2 for x = 0, 1 for x > 0

- Fixed bug which prevented the grid from being resized automatically when the equation editor or status bar font size was changed

- Fixed bug in version 2.0d that sometimes caused equations for derivatives to become garbled

- Added floor() (synonym for int()) and ceiling() functions

- Added mod operator (or %, your choice) to support modulo division

- Added support for 2-variable functions, including min and max

- Fixed another inequality shading problem, this time with curves that are steep near a discontinuity, like y >= sqrt(5x-1)-2

- Improved handling of point tables with small increments/large numbers of points

- Fixed bug in 2.0d which prevented changing the name of a data plot

- Tweaked curve-fitting algorithm to run for more iterations by default, so data sets with exact solutions don't end up with extra junk terms in them (e.g. y = 2x+2.1*10^-5)

- Added support for solving single-variable equations (and inequalities) with 2 solutions, e.g. x^2-x=6 or x > 6/x

- Added support for labels along the bottom of the grid (not just the top)

- Fixed bug which caused annotations to print at unreadably small size

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Reviews of Graphmatica

nth10sd
Reviewing 1.76 Beta (Feb 20, 2003)

this is the best graph plotting program i have ever used! it seems to have come back alive... i thought it was dead since last year...

now it's back BIGGER and BETTER!

Highly recommended for school work and education!!
ShellShock
Reviewing 1.75 Beta (Feb 12, 2003)

Wow, haven't used this program in years, I'm amazed it's still alive...

this program helped me through grade 12 Calculus quite a bit.

Anyways, this new version is looking quite spiffy, not too many harsh changes from 1.6 yet, I'm looking forward to 2.0

Also, one thing that always bothered me was the selecting of a graph area and copying it... I'd like it better if it was more scalable, instead of keeping the area 4:3 or whatever it is... also, copy to .png or .jpg would be a nice implementation too, save on some memory space.

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