Raising A Number To A Power (Exponentiation) - HP -80 Owner's Handbook Manual

See Displayed:
1411
~
$ percentage
.. $ net amount (base
plus percentage)
or,
See Displayed:
1411
.. $
percentage
~
$ net amount (base
less percentage)
Finding Percent Difference Between Any Number and the Base: To
find the percent difference between two numbers, enter the base number
6.%
and press
SAVE + •
Enter the second number, press.
II.
For ex-
ample,
Enter:
A%
See Displayed:
60
SAVE +
240 . 1I-----l~
.. _ % (240 is 300%
greater than 60)
Raising a Number to a Power (Exponentiation)
The
III
key lets you raise a positive number to any power automa-
tically. In many calculators you'd have to perform the serial calcula-
tion multiplying the base number a number of times equal to the ex-
ponent (if you could do it at allJ)
. That is, 8 x 8 x 8 x 8 x 8
x
8 means
8
6 •
To make it easier, we have you enter the base number, press
SAV E + ,
enter the value of the power to which the base number is to be raised,
press
III
and the result is displayed. For example, to find the value
of 8 6
,
Enter: See Displayed:
8
SAVE .
6 1 1 1 - - - - - - - - - -..
~
• • • •
To find the value of 2·'·5,
Enter: See Displayed:
2
SAVE +
2.5
CHS
III--------__
~
_
Note the blurred display, as opposed to blinking, during the calcula-
tion. This indicates the calculator is busy, and occurs when performing
y' or other functions in the HP-80 which use y'.
19