Power And Logarithmic Functions - HP -22S Owner's Manual

Scientific calculator.

Functions require one or two arguments (an argument is a number
acted upon by a function):
• Functions with one argument act on the number in the display. For
example, 6
[E]
calculates the square root of 6. A function cannot be
executed when the last character keyed in
is
an operator. For exam-
ple, you cannot key in 6
G
and then press
[E].
• Functions with two arguments and one result use
'INPUT
I
to sepa-
rate the arguments. For example,
4'INPUT
15.,
%CHG
I
calculates the
percent change between 4 and 5. The arguments can be expres-
sions. For example 1
G
3'INPUT
12
G
3., %CHG
I
also calculates the
percent change between 4 and 5.
• Polar jrectangular coordinate conversions use two arguments and
return two results. The HP-22S uses four special registers to store
and calculate the coordinates (see page 48).
Power and Logarithmic Functions
The HP-22S has the following power and logarithmic functions.
Power and Logarithmic Functions
Key(s'
Description
Key(s,
Description
[E]
Square root.
.~
Square.
0
Natural antilogarithm.
.' 1 0
x
l
Base 10 antilogarithm.
[b[)
Natural logarithm.
.'LOGI
Base 10 logarithm.
Keys:
Display:
Description:
45
[E]
6.7082
'/45.
4.5ElJ.~
3.1623E-5
Calculates 10-
4 . 5 .
03.7
ElJ.'1OX
I
x0.0002
Calculates 10-
3 . 7 .
G
6.3096E-9
Multiplies the two
antilogarithms.
42
3: Numeric Functions  