Texas Instruments TI-89 Titanium User Manual page 477

1. On the Graph screen, press: 2 ˆ and select
To display the Home screen and put
2 ˆ
3
2. On the Home screen, specify the inverse
function.
3. Press ¸.
The inverse is plotted as
.
(x,y)
Drawing a Line, Circle, or Text Label on a Graph
You can draw one or more objects on the Graph screen, usually for comparisons. For
example, draw a horizontal line to show that two parts of a graph have the same y value.
(Some objects are not available for 3D graphs.)
Clearing All Drawings
A drawn object is not part of the graph itself. It is drawn "on top of" the graph and
remains on the screen until you clear it.
Additional Graphing Topics
DrawInv
instead of
(y,x)
3:DrawInv
in the entry line, press:
DrawInv y1(x)
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