Texas Instruments -84 Plus, Manual Book

Page: 132 / 696

Chapter 3: Function Graphing 129
minimum, maximum minimum, maximum minimum, maximum minimum, maximum
minimum
and
maximum
find a minimum or maximum of a function within a specified
interval to a tolerance of 1
â
L
5.
To find a minimum or maximum, follow these steps.
1. Select
3:minimum
or
4:maximum
from the
CALCULATE
menu. The current graph is
displayed.
2. Select the function and set left bound, right bound, and guess as described for
zero
.
The cursor is on the solution, and the coordinates are displayed, even if you have
selected
CoordOff
format;
Minimum
or
Maximum
is displayed in the bottom-left corner.
To move to the same x-value for other selected functions, press
}
or
†
. To restore the
free-moving cursor, press
|
or
~
.
intersect
intersect intersect
intersect
intersect
finds the coordinates of a point at which two or more functions intersect using
solve(
. The intersection must appear on the display to use
intersect
.
To find an intersection, follow these steps.
1. Select
5:intersect
from the
CALCULATE
menu. The current graph is displayed with
First curve?
in the bottom-left corner.