Texas Instruments TI-89 사용자 설명서

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6. Return the graph to its initial orientation. 

Then move the viewing angle along the 
“viewing orbit” around the graph.

Press 0 (zero, not the letter O)

 

A A A

7. View the graph along the x axis, the 

y axis, and then the z axis.

Press X

This graph has the same shape along the 
y axis and x axis.

Press Y

Press Z

8. Return to the initial orientation.

Press 0 (zero)