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 in equation; Cartesian and polar coordinate systems; curve and animation; graph of inverse function and derivative function; parity; maximum, minimum, and inflexion; integration; root; the length of curve; tangent and normal; curvature circle; intersection; 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; surface by rotation; material and light.