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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
.)