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TI-83 Plus Function Graphing 149
The time
zero
spends to find the correct zero value depends on the
accuracy of the values you 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
2:zero
from the
CALCULATE
menu. The current graph is
displayed with
Left Bound?
in 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.
Right Bound?
is 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.
Guess?
is then displayed in the
bottom-left corner.