Texas Instruments TITANIUM TI-89 User Manual
Page 337

Basic Function Graphing
337
Finding an Arc Length
Finding an Arc Length
Finding an Arc Length
Finding an Arc Length
1. From the
Graph
screen, press
‡ and select
B:Arc
.
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
+
marks the first point.
Shading the Area between a Function and the x Axis
Shading the Area between a Function and the x Axis
Shading the Area between a Function and the x Axis
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
screen, press
‡ and select
C:Shade
. The screen prompts for
Above
X axis?
2. Select one of the following. To shade the function’s area:
•
Above the x axis, press
¸.
•
Below the x axis, press:
j
N
5. Set the second point, and press
¸.
A
+
marks the second point, and the arc
length is displayed.