1-20 Getting started
Example Calculate :
Long results If the result is too long to fit on the display line, or if you
want to see an expression in textbook format, press
to highlight it and then press .
Negative
numbers
Type to start a negative number or to insert a
negative sign.
To raise a negative number to a power, enclose it in
parentheses. For example, (–5)
2
= 25, whereas –5
2
=
–25.
Scientific
notation
(powers of 10)
A number like or is written in
scientific notation, that is, in terms of powers of ten. This
is simpler to work with than 50000 or 0.000000321. To
enter numbers like these, use
EEX. (This is easier than
using 10 .)
Example Calculate
4
EEX
13
6
EEX
23 3 EEX
5
Explicit and
implicit
multiplication
Implied multiplication takes place when two operands
appear with no operator in between. If you enter AB, for
example, the result is A*B.
23
2
14 8–
3–
----------------------------
45()ln
23
14
8
3
45
510
4
× 3.21 10
7–
×
410
13–
×()610
23
×()
310
5–
×
----------------------------------------------------
HP 39gs English.book Page 20 Wednesday, December 7, 2005 11:24 PM
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