Graphing 3D Functions
| 1. | In the 3D Graphing view, tap Tools  and go to 3D Graph Entry/Edit > Function. |
The keyboard and the entry line appear.
| 2. | Enter the expression that defines the graph. You can type the expression or build it using expression templates. |
| 3. | Tap ENTER to create the graph and hide the entry line and keyboard. You can show the entry line and keyboard anytime by tapping  on the Graphs Toolbar. |
