Drawing A Tangent Line - Texas Instruments TITANIUM TI-89 User Manual

2. As necessary, use D and C to select the function for the first point.
3. Set the first point. Either use A or B to move the cursor to the point or type its x
value.
4. Press ¸. A
5. If the second point is on a different function, use D and C to select the function.
6. Set the second point. (If you use the cursor to set the point, a line is drawn as you
move the cursor.)
7. Press ¸.
The distance between the two points is
displayed, along with the connecting line.

Drawing a Tangent Line

Drawing a Tangent Line Drawing a Tangent Line Drawing a Tangent Line
1. From the
Graph
2. As necessary, use D and C to select the applicable function.
To erase a drawn tangent line, press † (
Note:
3. Set the tangent point. Either move the
cursor to the point or type its x value.
4. Press ¸.
The tangent line is drawn, and its
equation is displayed.
Basic Function Graphing
marks the point.
+
screen, press ‡ and select
.
A:Tangent
).
ReGraph
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