Graphmatica is a powerful, easy-to-use Equation plotter with numerical and Calculus features. Graphs Cartesian functions, relations, and inequalities, plus polar, parametric, and ODEs. Up to 25 graphs on screen at once. Offers copy to clipboard (bitmap/WMF/EMF), Button Bar, on-line help and demo files. Great for algebra through college calculus. New native Win32 version: user-selectable fonts, fixed color printing, improved integration, new Find Critical Points/Zeros feature, more! $25, by kSoft. Site licenses and bulk discounts
Features:
The Redraw Queue. Graphmatica remembers up to the last 999 equations you typed in or loaded from a file. You can save your work for use in a later session or with any text editor.
Advanced equation parser follows mathematical rules--not the computer's. You can use implied multiplication, a complete library of math functions (including trig), and even leave out those annoying parentheses in appropriate places. Forget about isolating variables before graphing! Graphmatica will isolate the dependent variable for you, if possible, and even graph many relations that can only be specified as implicit functions.
Powerful graphing engine. You can choose Between six styles of graphing: regular Cartesian, polar, parametric, and slope-field and initial-value approximations for up to fourth-order ODEs (and fourth-order linear systems as well), all detected automatically based on which variables you use in your equation. Cartesian inequalities are supported as well. Most graphs appear instantly on Pentium-class machines.
Data plotting and Curve Fitting support make it easy to Highlight points on a curve or enter experimental data sets and find the equation of best fit.
