Graphmatica versions

v2.4.2.1 [Dec 5, 2014]
New/improved features:
- Curves are now highlighted as you mouse over them or select them in the equation list.
- Added Pick Line Style to the context menu for equations, allowing you to choose from solid, dashed, dotted, and dash-dot line styles.
- Fixed-increment Cartesian, polar, and parametric graphs (i.e. with the step rate specified as a third parameter in the domain) now display as a series of points; point tables are aligned to display the same values.
- The parser now accepts functions run together with a single-variable parameter, e.g. y=logx.
- Added support for specifying powers of functions before the parameter e.g. y=sin^2x or y=cos²x
- Any equation/inequality that is explicitly specified as x=f(y) is now graphed as a function of y, even if it can be solved for y instead.
Bug fixes:
- Fixed bug which could cause graphs to be drawn slightly past the end of their specified domain.
- Find All Graphs now adjusts the range based only on the requested domain of the equations (rather than the maximum possible values that would be visible on the screen with an unrestricted domain).
- Selection highlighting now uses a dark transparent overlay (instead of a hard to see white overlay) for bright colors other than pure white.
- Fixed a number of issues with graphing inequalities like x < 1/y, where it is important to evaluate asymptotes as a function of y instead of x.
- Fixed a problem which caused ODEs (and implicit Cartesian functions) to fail to register (and later disappear) when evaluation failed due to a non-fatal error (overflow, out of domain, etc.). They now just stop drawing at that point.
- Eliminated extra vertical asymptote drawn as part of y=acot x.
- Fixed cubert(x) function to be defined for x < 0.

v2.3 [May 23, 2014]
- Adds the ability to export graphs to image files in the popular JPEG and PNG formats.
- Supports all modern 32-bit and 64-bit platforms: Windows 2000 SP4 through Windows 8.1.
- Fixed bug introduced in Find Intersection (all dependent values zero).

v2.2 [Mar 25, 2013]
Corrected domain specifications in one more demo file and a help page.
XP-style common controls are now loaded on 64-bit versions of Windows.
The installer is now digitally signed to verify that you have downloaded an authentic version of the program.

v2.0.9.9 [Feb 14, 2008]
1. Fixed infinite loop parsing comma operator in domains and 2-variable
functions when decimal separator is also set to ",".
2. Fixed crash graphing equations with free variables that have no on-screen
solutions.
3. Added independently-settable font for bottom labels.
4. Graphs are now recalculated automatically upon changing the Theta Range.
5. The fraction characters ¼, ½, and ¾ are now accepted in place of normal
decimals (before they could cause an infinite loop in the equation parser).
6. The custom increment for point table spacing now works for polar graphs
as well as cartesian and parametric.
7. Switched from WinHelp to HTML help format, which is supported on Vista.