Texas Instruments TI-89 Titanium User Manual page 397

Example
Graph the equation sin(x
1. Use 3 to set
2. Press 8 #, and define the equation:
z1(x,y)=sin(x^4+y– x^3y)–.1
3. Press 8 $, and set the Window
variables as shown.
4. Press:
8 ÍTurn on the axes, set
Style = IMPLICIT PLOT
Window editor.
5. Press 8 % to graph the equation.
It will take awhile to evaluate the graph;
so be patient.
3D Graphing
4 3
+y–x y) = .1.
.
Graph=3D
, and return to the
The graph shows where
4 3
sin(x +y–x y) = .1
394