Texas Instruments TI-89 Titanium User Manual page 326

Finding an Arc Length
1. From the
Graph
2. As necessary, use D and C to select the applicable function.
3. Set the first point of the arc. Either use A or B to move the cursor or type the x
value.
4. Press ¸. A
5. Set the second point, and press ¸.
A marks the second point, and the arc
+
length is displayed.
Shading the Area between a Function and the x Axis
You must have only one function graphed. If you graph two or more functions, the Shade
tool shades the area between two functions.
1. From the
Graph
X axis?
2. Select one of the following. To shade the function's area:
Above the x axis, press ¸.
•
• Below the x axis, press:
N
j
Basic Function Graphing
screen, press ‡ and select
marks the first point.
+
screen, press ‡ and select
.
B:Arc
. The screen prompts for
C:Shade Above
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