Texas Instruments TI-89 Titanium User Manual page 324

3. Set the lower limit for x. Either use A and B to move the cursor to the lower limit or
type its x value.
4. Press ¸. A 4 at the top of the screen marks the lower limit.
To erase the shaded area, press † (
Note:
5. Set the upper limit, and press ¸.
The interval is shaded, and its
approximate numerical integral is
displayed.
Finding an Inflection Point within an Interval
1. From the
Graph
2. As necessary, use D and C to select the applicable function.
3. Set the lower bound for x. Either use A and B to move the cursor to the lower bound
or type its x value.
4. Press ¸. A 4 at the top of the screen marks the lower bound.
5. Set the upper bound, and press ¸.
The cursor moves to the inflection point (if
any) within the interval, and its
coordinates are displayed.
Finding the Distance between Two Points
1. From the
Graph
Basic Function Graphing
screen, press ‡ and select
screen, press ‡ and select
).
ReGraph
.
8:Inflection
.
9:Distance
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