Z-Plot is a plotting software that allows you to visualize a multitude of mathematical functions and curves. The software has a powerful mathematical formula interpreter, that also allows the user to handle complex numbers, easily. The display can be switched from 2D to 3D mode. Additionally, diagrams can be made from a data table.
With this AutoCAD add-on you can create mathematical curves. Curves can be defined as explicit, parametric or polar functions. Function's formula can also be changed dynamically by changing parameter 'p' value(parametric modeling). Use standard AutoCAD commands(revolve, extrude, ...) to create solids and surfaces from these mathematical functions.