Texas Instruments TITANIUM TI-89 - 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.