CHAPTER 6. GRAPHING EQUATIONS/FUNCTIONS
2: Zero
Zero will identify the zeros (a.k.a. the x-coordinate of an x-intercept) of your function. To use this
command, the calculator will ask for a lower bound and upper bound, which tells the calculator
which x-values to look between. If more than one zero is found, the least (left-most) zero will be
identified.
Example:
There is a zero between 1 and 2. Estimate that zero.
Press to use the Zero command. You must tell the calculator to look between 1 and 2.
For the lower bound, use the arrow keys to move the cursor near an x-value of 1 and then press
. Notice that there is now a triangle towards the top of the screen marking your lower bound.
For the upper bound, use the arrow keys to move the cursor to the right, near an x-value of 2.
When you press , the calculator will find an estimate of the zero.
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