HP HP-20S - Percent Functions

Keys: Display: Description:
3 4 0.2500 Calculates 1 + 3 and
1 + 4. Addition is
deferred.
(=] 0.5833 Adds the two
reciprocals.
The exponentiation operator, [y*], can also be used to find roots of
positive numbers. For example, find /3 (which is equivalent to 3'/4):
Keys: Display: Description:
3 3.0000 Exponentiation.
4 (77x]) (=] 1.3161 Reciprocal of power
will calculate the root.
Percent Functions
Percent
The () function performs two different operations:
B When there is no pending operator, or the last operator you entered
was (x], (2], or [¥*], pressing (\q]) divides the displayed number
by 100.
® When or [=] is the pending operator, (] interprets the dis-
played number as a percent and returns that percent of the number
preceding the or [=].
32 3: Numeric Functions