TI-83 Plus Activities 548
4. Press y 0 (above s) to display the
table.
Notice that the maximum value for Y1 (box’s
volume) occurs when X is about 4, between 3
and 5.
5. Press and hold † to scroll the table until a
negative result for Y1 is displayed.
Notice that the maximum length of X for this
problem occurs where the sign of Y1 (box’s
volume) changes from positive to negative,
between 10 and 11.
6. Press y -.
Notice that TblStart has changed to 6 to reflect
the first line of the table as it was last displayed.
(In step 5, the first value of X displayed in the
table is 6.)