Math Help for Section 1.2, Page 15

Using a
Calculator
This text includes examples and exercises that use a
calculator. As each new calculator application is encountered, you will
be given general instructions for using a calculator. These
instructions, however, may not agree precisely with the
steps required
by your calculator, so be sure you are familiar with the use of the
keys on your own calculator.

For many of the calculator examples in the text, at least two
possible keystroke sequences are given: one for a standard scientific
calculator and one for a graphing calculator.

Technology:
Tip
The keys
and  change a number
to its opposite,
and
is the
subtraction
key. For instance, the keystrokes
4 5
will not
correctly
evaluate the
expression $ – \,4 – 5.$