Grafeq

Here is a fully-functional evaluation copy of GrafEq 2.10 PPC, a program for graphing, and exploring, mathematical relations. It is designed to be used for learning and teaching high school math. Some of the new features: (for 2.10) * A French language interface is now available. * Sub-pixel computations are now performed using a multi-grid / recursive method instead of a regular grid / iterative method (with progressively finer grids / step-sizes). For some common graphs, such as y=logx over [-10,10] x [-10,10], verification efficiency has consequently improved by several orders of magnitude. * Better graphing of formulae containing common sub-expressions, especially when discontinuous operators are involved: see http://www.peda.com/grafeq/gallery/decimal_squares.html for an example. * Rich Text Format (RTF) encapsulation of formulae is now supported; this can help word processors vertically place formulae exported via the clipboard.