Texas Instruments TI-89 Manuale Utente

Activities

 768

6. In the 

, press: 

8 Í 
and set the Graph Format variables to:

 Calculating and drawing the graph 

takes about three minutes.

7. Graph the modulus surface.

The 3D graph is used to visually display a 
picture of the roots where the surface 
touches the 

 plane.

8. Use the Trace tool to explore the function 

values at 

 and 

. 

9. Use the Trace tool to explore the function 

values at 

 and 

.