HP 40gs User Manual page 32

Example
Long results
Negative
numbers
Scientific
notation
(powers of 10)
Example
Explicit and
implicit
multiplication
1-20
2
23 – 14 8
Calculate
--------------------------- -
3 –
23
14
8
3
45
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
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)
–25.
×
5 10
A number like
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
using 10 .)
–
( ×
4 10
----------------------------------------------------
Calculate
3 10
4
EEX
13
6
23 3
5
Implied multiplication takes place when two operands
appear with no operator in between. If you enter AB, for
example, the result is A*B.
:
( )
ln 45
.
2
= 25, whereas –5
4 7 –
×
3.21 10
or
. (This is easier than
EEX
13 23
) 6 ( × )
10
5 –
×
EEX
EEX
2
=
is written in
Getting started