HP 12c Platinum - The Power Function

102 Section 7: Mathematics and Number-Alteration Functions
File name: HP 12cpt_user's guide_English_110608.DOC Page: 284 of 285
Printed Date: {2009/1/13 Dimension: 14.8 cm x 21 cm
Keystrokes
(RPN mode)
Display
gT
0.88
The fractional portion of the number
previously displayed.
The Power Function in RPN Mode
Pressing
q
calculates a power of a number — that is, y
x
. Like the arithmetic
function
+
,
q
requires two numbers:
1. Key in the base number (which is designated by the y on the key).
2. Press \ to separate the second number (the exponent) from the first (the
base).
3. Key in the exponent (which is designated by the x on the key).
4. Press q to calculate the power.
To Calculate
Keystrokes
(RPN mode)
Display
2
1.4
2
\
1.4
q
2.64
2
–1.4
2
\
1.4
Þq
0.38
(–2)
3
2
Þ\
3
q
–8.00
3
2
or 2
1/3
2
\
3
yq
1.26
The Power Function in ALG Mode
To calculate a power of a number, that is, y
x
, in ALG mode, do the following:
1. Key in the base number (which is designated by the y on the key).
2. Press q and key in the exponent (which is designated by the x on the key)
3. Press } to calculate the power.
To Calculate
Keystrokes
(ALG mode)
Display
2
1.4
2
q
1.4
}
2.64
2
–1.4
2
q
1.4
Þ}
0.38
(–2)
3
2
Þq
3
}
–8.00