User Manual

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

}

†

to move the cursor onto the function for which you

want to find a zero.

3. Press

(or enter a value) to select the x-value for the left

bound of the interval, and then press

. A

indicator on the

graph screen shows the left bound.

Right Bound?

is displayed in the

bottom-left corner. Press

(or enter a value) to select the

x-value for the right bound, and then press

. A

indicator on the

graph screen shows the right bound.

Guess?

is then displayed in the

bottom-left corner.