HP -225 Owner's Manual page 50

Scientific calculator
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Functions require one or two arguments (an argument is a number
acted upon by a function):
B Functions with one argument act on the number in the display. For
example, 6
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
and then press [Jz].
B Functions with two arguments and one result use
to sepa-
rate the arguments. For example, 4
5@%CHG] calculates the
percent change between 4 and 5. The arguments can be expres-
sions. For example 1(+]3
2(+]
3B%CHG] also calculates the
percent change between 4 and 5.
B Polar/rectangular 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
Square root.
B2
Square.
Natural antilogarithm.
@(i0*]
Base 10 antilogarithm.
Natural logarithm.
@(oG]
Base 10 logarithm.
Keys:
Display:
Description:
45
6.7082
V45 .
4.5 () B(0*]
3.1623E-5
Calculates 104>,
(x]3.7 FAB(107)
X0.80002
Calculates 10737,
(=]
6.3896E-9
Multiplies the two
antilogarithms.
42
3: Numeric Functions

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