From the developer: "Do you need a graphing calculator but can't afford the 100 dollar TI's? Would you like a cheaper way to put your student the next step ahead? Then perhaps you should try EvalFunction. EvalFunction is designed from the ground up to quickly and efficiently solve and graph even the most complex equations! You simply enter in one, two, or three equations, enter in a range of X's to solve for (and an increment), then choose Evaluate or Graph. Evaluate will solve those equations for every value of X in your entered range. Choosing graph will plot those equations on a set of easy-to-read axis. The graphs will be in color to aid the viewer. The only limitation on this software is a two use trial limit, so there is nothing to lose by downloading today!"