HP 15c Collector's Edition User Manual

Section 2: Numeric Functions 25
Keystrokes
Display
123.4567 | ‘
123.0000
| K ” | ‘
-123.0000
Reversing the sign does
not alter digits.
| K ´ q
-0.4567
1.23456789 ”
| &
-1.2346
´ CLEAR u
(release)
1234600000
Temporarily displays all
-1.2346
digits in the mantissa.
| a
1.2346
One-Number Functions
One-number math functions in the HP 15c operate only upon the number
in the display (X-register).
General Functions
Reciprocal. Pressing ⁄ calculates the reciprocal of the number in the
display.
Factorial and Gamma. Pressing ´ ! calculates the factorial of the
displayed value, where x is an integer 0 ≤ x ≤ 69.
You can also use ! to calculate the Gamma function, Γ(x), used in
advanced mathematics and statistics. Pressing ´ ! calculates
Γ(x + 1), so you must subtract 1 from your initial operand to get Γ(x). For
the Gamma function, x is not restricted to nonnegative integers.
Square Root. Pressing ¤ calculates the positive square root of the
number in the display.
Squaring. Pressing | x calculates the square of the number in the
display.
Keystrokes
Display
25 ⁄
0.0400
8 ´ !
40,320.0000
Calculates 8! or Γ(9).
3.9 ¤
1.9748
12.3 | x
151.2900

HP 15c Collector's Edition Specifications

General

Brand	HP
Model	15c Collector's Edition
Category	Calculator
Language	English