PARAM 3D was designed as a 3-Dimensional Parmetric graphing program for the TI-83/84+ Silver Edition mean to supplement Derive 6, which does not have such a graphing feature. Due to my lack of skill in assembly programing, I had to create it in TI-BASIC so the resulting program is slow if not used on the computer but effective nonetheless.

Upon running the program for the first time, the user must input equations for X(t), Y(t), and Z(t) under "Input Equation" on the main menu. All data is saved to a system Graph Database for future use so previous sessions can be loaded with the "Load Graph" command.

In the main graphing screen, the top five buttons (y=, window, etc.) function as usual, opening menus with appropriate commands. Graphing can be stopped at any time by pressing the "Clear" or "Enter" buttons. The graph can be rotated 45 degrees by pressing the right or left arrow keys.

To significantly speed up graphing and rerendering upon rotation, turn off the display (includes the graph tick marks) and/or the labels (scale and angle) from the Window menu.

I apologize for the speed of the program, but please remember, this program was only designed as a supplement for Derive 6, and thus is best used in a TI emulator or the TI-Flash Debugger on your computer, where it runs relatively fast.

Contact me with any bugs or suggestions at Jeanlucpika@aol.com.