- 31 -
The highest value of x displayed is 10, so
value
will not return a y value for
X = 12
.
zero:
Enter a function at Y= and graph it. Press
2
nd
TRACE
and select
zero
. The calculator
asks, “Left Bound?” Use the left arrow key to move the cursor so that it is to the left of the zero.
Press
ENTER
. The calculator asks, “Right Bound?” Use the right arrow key to move the cursor
so that it is to the right of the zero. Press
ENTER
. The calculator asks, “Guess?” Press
ENTER
. The location of the zero will appear at the bottom of the screen. Repeat the process to
find the other zeros (if any) of the function.
Example: Find the leftmost zero of the function
3 2
2 3
f x x x x
.
Start by graphing the function and adjusting the viewing window, if needed.
Press
2
nd
TRACE
and select
zero
.
Move the cursor so that it is to the left of the zero.
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