Function Grapher is an easy-to-use software to create 2D, 2.5D, 3D function graphs, animations and table graphs. 2D Features: explicit, implicit, parametric, and inequality; Cartesian and polar coordinate systems; curve and animation; line plot; scatter plot; stem plot; step plot; curve smoothing. 3D Features: cartesian, cylindrical, and spherical coordinate systems; 3D curve and surface; animation; 3D surface based on table data; material and light. Ability to create color map, contour plot and vector plot. Ability to move, zoom in, zoom out and rotate graphs. Ability to save graphs as pgp file or bmp file. Ability to save animation as AVI file.