1. | In the 3D Graphing view, tap Tools and go to 3D Graph Entry/Edit > Parametric. |
The keyboard and the entry line appear.
2. | Type the equations that define the graph. |
3. | (Optional) Tap to set the 3D plotting parameters tmin, tmax, umin, and umax. |
4. | Tap ENTER to draw the graph and hide the entry line and keyboard. You can show the entry line and keyboard anytime by tapping on the Graphs Toolbar. |