Visual Calculus is an easy-to-use calculus software for teaching and studying limit, derivative function, integral, 3D vector, double integral, triple integral, series, ode etc. It can create 2D, 2.5D and 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 o