Reference Guide

3-292 Full Command and Function Reference
Γ x 1+( ) e
t–
t
x
td
0
∞
∫
=
and defined for other values of x by analytic continuation: Γ(x + 1) = n Γ(x)
Access: !´ L PROBABILITY ! ( ´ is the left-shift of the Pkey).
Flags: Numerical Results (–3), Underflow Exception (–20), Overflow Exception (–21)
Input/Output:
Level 1/Argument 1 Level 1/Item 1
n
→
n!
x
→
Γ(x + 1)
'symb'
→
'(symb!)'
See also: COMB, PERM
% (Percent)
Type: Function
Description: Percent Function: Returns x percent of y.
Common usage is ambiguous about some units of temperature. When ºC or ºF represents a
thermometer reading, then the temperature is a unit with an additive constant: 0 ºC=273.15 K,
and 0 ºF=459.67 ºR. But when ºC or ºF represents a difference in thermometer readings, then the
temperature is a unit with no additive constant: 1 ºC=1 K and 1 ºF=1 ºR.
The arithmetic operators +, –, %, %CH, and %T treat temperatures as differences, without any
additive constant. However, +, –, %CH, and %T require both arguments to be either absolute (K
and ºR), both ºC, or both ºF. No other combinations are allowed.
For more information on using temperature units with arithmetic functions, see the entry for +.
Access: !´ REAL % ( ´ is the left-shift of the Pkey).
Input/Output:
Level 2/Argument 1 Level 1/Argument 2 Level 1/Item 1
x y
→
xy/100
x 'symb'
→
'%(x,symb)'
'symb' x
→
'%(symb,x)'
'symb
1
' 'symb
2
'
→
'%(symb
1
, symb
2
)'
x y_unit
→
(xy/100)_unit
x_unit y
→
(xy/100)_unit
'symb' x_unit
→
'%(symb,x_unit)'
x_unit 'symb'
→
'%(x_unit,symb)'
Example 1: 23.7 995 % returns 235.815 .
Example 2: 15 176_kg % returns 26.4_kg .
Example 3: 100_°C 50 % returns 50_°C .
See also: +, %CH, %T
_ (Unit attachment)
Type: Unit attachment
Description: Unit attachment symbol: Attaches a unit type to a numeric value.