Texas Instruments TI-83 PLUS - Manual (Page 551)

TI-83 Plus Activities 548
4. Press y 0 (above s ) to display the
table.
Notice that the maximum value for Y 1
(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 Y 1
is displayed.
Notice that the maximum length of X for this
problem occurs where the sign of Y 1
(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 .)