Texas Instruments TI-89 Manual De Usuario

Differential Equation Graphing

 430

To examine this harmonic oscillator in more detail, use a split screen to graph the 
manner in which y and y' change with respect to time (t).

9. Press 

3 and change the mode 

settings on 

 as shown. Then close 

the 

 dialog box, which redraws the 

graph.

 To display different graphs in both 

parts of a split screen, you must use the 
2

mode.

10. Press 

2 a to switch to the right side 

of the split screen.

11. Use 

† to select 

 and 

.

The right side uses the same equations 
as the left side. However, no equations 
are selected initially in the right side.

12. Press:

, 

— or —

@

8 Í Set 

.

 Because 

 cannot 

plot a time axis, you must change the 
Fields setting. 

 turns off all fields.

13. In the Y= Editor, press: 

@

2 ‰and make sure 

.