Casio FX-890P Owner's Manual page 63

LOG
PURPOSE: Returns the common logarithm of the argument.
FORMAT:
LOG (argument)
Numeric expression
The parenthesis enclosing the argument can be omitted when the argument is a
numeric value or variable.
EXAMPLE: LOG (7922)
PARAMETERS: argument must be within the ]10
EXPLANATION:
1. The returned value is in the ]-100 , +100[ range.
SEE: LN
LN
PURPOSE: Returns the natural logarithm of the parameter
FORMAT:
LN (argument)
Numeric expression
The parenthesis enclosing the argument can be omitted when the argument is a
numeric value or variable.
EXAMPLE: LN (1965)
PARAMETERS: argument must be within the ]10
EXPLANATION:
1. The returned value is in the [-230.2585092 , +230.2585092] range.
2. LN is the inverse function of EXP:
For any positive argument, EXP(LN(argument)) # argument.
SEE: EXP
NCR
PURPOSE: Returns the combination nCr for the values of n and r.
FORMAT:
NCR ( n value
Numeric expression
EXAMPLE: X = NCR(70,35)
PARAMETERS: n value and r value should follow: 0 ≤ r ≤ n < 10
EXPLANATION:
1. Returns the permutation: nCr = n! / (r! (n-r)! )
2. A fractional value as either n or r generates an error.
SEE: FACT, NPR
, r value )
Numeric expression
63
-100 100
, 10 [ range.
-100 100
, 10 [ range.
10
F
0
F
0
F
0