New in v3.0:
- Automatic creation of interactive JavaScript Apps, which can be viewed in a browser on any platform (including iPhone/iPad). Some example apps are here and here.
- Export of Animations as animated gif files (which can be used in Wikipedia and Power Point).
- Export of source code for measured quantities in a variety of formats: (C, Objective C, C++, C#, VB, VBA, Java, JavaScript, ActionScript).
- TeX export.
- Piecewise functions.
v2.2 added the following features:
- Symbolic areas of curve-sided regions (including area under and between functions)
- Arcs (both circular and based on other curves)
- Symbolic Arc length
- Regular polygon (generic n)
- N-sided curve approximation (with generic n)
- Enhanced annotation features
v2.1 added the following features:
- Filled circles and ellipses
- Transparency support for solid objects
- Ability to arrange the drawing order of all items
- Quick toggling of hidden items
v2.0 added the following features:
- Conics - Parabola, Ellipse and Hyperbola, defined by equation or by foci, or by incidence constraints.
- Trace - allows you to display whole families of shapes at once
- CAS support - We have expanded the list of supported CAS's to incorporate the TI-nspire
- Annotation - we allow you to create inert distance and angle symbols, which are neither input nor output, but simply annotation.
- Much more!
Geometry Expressions v1.x and v2.x users can upgrade for just $79.
If you purchased Geometry Expressions after June 1, 2011 you are eligible for a free upgrade to v3.0. Please email your user name and key to Geometry Expressions support.