Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book page 95

zero
finds a zero (x-intercept or root) of a function using
zero
x-intercept value;
zero
The time spends to find the correct zero value depends on the accuracy of the values you
zero
specify for the left and right bounds and the accuracy of your guess.
To find a zero of a function, follow these steps.
1. Select from the
2:zero
the bottom-left corner.
2. Press } or † to move the cursor onto the function for which you want to find a zero.
3. Press | or ~ (or enter a value) to select the x-value for the left bound of the interval, and then
press Í. A 4 indicator on the graph screen shows the left bound.
displayed in the bottom-left corner. Press | or ~ (or enter a value) to select the x-value for
the right bound, and then press Í. A 3 indicator on the graph screen shows the right
bound. is then displayed in the bottom-left corner.
Guess?
4. Press | or ~ (or enter a value) to select a point near the zero of the function, between the
bounds, and then press Í.
The cursor is on the solution and the coordinates are displayed, even if
selected. To move to the same x-value for other selected functions, press } or †. To restore the
free-moving cursor, press | or ~.
minimum, maximum
and
minimum maximum
tolerance of 1âL5.
To find a minimum or maximum, follow these steps.
1. Select
3:minimum
2. Select the function and set left bound, right bound, and guess as described for
finds the zero closest to your guess.
menu. The current graph is displayed with
CALCULATE
find a minimum or maximum of a function within a specified interval to a
or from the
4:maximum
. Functions can have more than one
solve(
menu. The current graph is displayed.
CALCULATE
Chapter 3: Function Graphing
Left Bound?
is
Right Bound?
format is
CoordOff
.
zero
in
88