Now press the key ENTER and obtain
Shown is the equation we are seeking. To graph press
the key Y= VARS 5 7 . This places the
equation into Y
1
. Now press GRAPH and obtain the
following, which is the screen found in the text).
Clearing Data in STAT
To clear data in STAT press the keys STAT 4 L1
, L2 ENTER .
Sections 2.2-2.7 in Text
To obtain the best fitting quadratic follow all the in-
structions found in STAT above except select QuadReg.
That is, press the keys STAT 6 .
Section 3.1 in Text
• The TABLE Operation
• The value Operation
• Using TRACE to Go Beyond Viewing Window
• Executing a Program
• The Program EVAL
We can easily create the tables found in Section 3.1
in the text by using the TABLE operation on the TI-82.
The TABLE Operation
Use the TABLE operation to make a table of values for
the function y = 3x + 1 found in Table 3.1 in the text.
Solution. Press the keys 2nd TblSet to obtain the
table setup menu. You should see the following.
Move the blinking cursor to the Ask on the next to the
last line and press the ENTER key. Ask will then be
highlighted. Make sure that Auto is highlighted on the
last line. Now, using the Y = key, enter the function
Y
1
= 3x + 1. To obtain the table press the keys 2nd
TABLE . You see a column headed by x and a column
headed by Y
1
.
41
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