To find the x-intercepts (the zeros), use the CALC zero command. You will need to answer three questions during this process. To set the Left Bound, enter any value of x near but a little to the left of the x-intercept. The Right Bound can be any value of x near but a little to the right of the x-intercept. For the Guess, use a value of x that is close to the intercept itself. Let's find the left x-intercept first.
When the calculator asks each question, the graph is put into trace mode. Just type in the value of x you want, and a prompt will appear as you do. We used a left bound of -1.4, a right bound of 0, and a guess of -1. Make sure the x-values you enter when answering these questions are valid for the current window (between Xmin and Xmax) and on the same branch as the x-intercept. The coordinates of the zero are then displayed. |
|||
| Copyright © 2010 Turner Educational Publishing
|
1.4 
0 
