HP 49g Graphing Calculator - Manual (Page 36)

Multi-line entries
The infomiation you enter on the command line can occupy more than
one line, for example, when you ai'e entering a program. (See chapter 10,
“Introduction to prograiraning”, for information on entering programs.) To
create a new line, press
0 0.
Wliat you have already typed moves up and
a new line becomes available for you to continue entering your object.
You can set a display mode so that each new line is automatically
indented. See “Display modes” on page 2-19 for information.
Entering numbers
Positive numbers
You enter a positive number by pressing the appropriate digit keys and, if
necessary, the decimal point key (
0
).
Negative numbers
To enter a negative number, type the number as if it was a positive nmnber
and then press ©. Tire @ key changes the sign of the number on the
command line: from positive to negative, or negative to positive.
Integers and real numbers
If you are working in exact mode—explained on page 2-23—the answer
given to a calculation will depend on the way you represent integers. If
you represent an integer as a real number—by entering a decimal point
after die number—the HP 49G assiunes that you want to switch to
approximate mode (see page 2-23). Therefore, you can obtain an
approximate answer in exact mode by entering integers as real niunbers.
■ f ■ 5
5 " 2 .
2 2 , 5
(A) (B)
Figure 2-2: In case ( a ) 2 is entered as an integer; in case (B), 2 is entered as a real number.
Page 2-8 Basic operation