a powerful easy-to-use equation plotter with numerical and calculus features: - Graph Cartesian functions relations and inequalities plus polar parametric and ordinary differential equations. - Up to 999 graphs on screen at once. - New data plotting and curve-fitting features. - Numerically solve and graphically display tangent lines and integrals. - Find critical points solutions to equations and intersections between Cartesian functions. - Print your graphs copy to clipboard as bitmap or enhanced metafile in black-and-white or color or export to JPEGPNG file. - On-line help and demo files make getting up to speed a snap. In summary a great tool for students and teachers of anything from high-school algebra through college calculus.