Notes on using graphing calculators
Notes on using graphing calculators
MTH 163 Fall 99
Notes on using graphing calculators.
These notes apply specifically to the TI83. The same results can usually
be obtained on other calculators, but the procedure may be different.
· Producing a table of values for
a function .
1)Enter the function rule in the "Y=" list.
2)Set up the table by specifying beginning and increment
values of x (the independent variable).
3)View the table.
Example: Produce a table of values for the function
1)Press the "Y=" key, and enter abs(x1)/(x2) for
any available function (suppose Y_{1} for this example).To enter
the
absolute value function,
press the MATH key, then tap the rightarrow key. Notice that the highlight
is on choice 1,
"abs(". Then press ENTER,
and abs( is pasted into the location.
2) Press the "2nd" key, then the WINDOW key (this
chooses TBLSET). Now enter 2 for your TblStart value
(or whatever value you want
the table to begin with). Press ENTER. This takes you to the D
Tbl line. For the
D
Tbl value enter 1.
3) Press the "2nd" key, then the GRAPH key (this
chooses TABLE). You will now see a column of values of x,
and columns for each entered
function in the "Y=" list. If you entered abs(x1)/(x2) for Y_{1},
then beside the
column of xvalues, you
will see values for Y_{1}. Notice that "ERROR" is given instead
of a value for Y1 in
the x = 2 row. This lets
you know that the function (for whatever reason) does not have a real number
value at x = 2.
By using the down or uparrow
keys, you can view additional values of x and Y_{1}.
Absolute Value
Y = key
Table Set Menu Tables
