Casio FX-890P Owner's Manual page 120

cosh()
PURPOSE: Returns the value of hyperbolic cosine (parameter).
FORMAT: double cosh(x) double x;
PARAMETERS: x must be within the [-230.2585092, +230.2585092] range.
EXPLANATION:
1. The mathematical formula for hyperbolic cosine is:
cosh(x) = (e
2. The returned value is in the [-1, 5x10
SEE: acosh(), log()
exp()
PURPOSE: Returns the value of e
FORMAT: double exp(x) double x;
PARAMETERS: x must be within the [-230.2585092, +230.2585092] range.
EXPLANATION:
1. The value of e is 2.7182818284590452353602874713526...
2. The returned value is in the ]0, 10
SEE: log()
log()
PURPOSE: Returns the natural logarithm of the parameter
FORMAT: double log(x) double x;
PARAMETERS: x must be within the ]10
EXPLANATION:
1. The returned value is in the [-230.2585092, +230.2585092] range.
2. log() is the inverse function of exp():
For any positive x, exp(log(x))#x.
SEE: exp()
log10()
PURPOSE: Returns the common logarithm of the parameter
FORMAT: double log10(x) double x;
PARAMETERS: x must be within the ]10
EXPLANATION: The returned value is in the ]-100, +100[ range.
SEE: log()
x -x
+ e ) / 2 where e is 2.7182818284590452353602874713526...
(parameter)
99
[ range.
.
100
[ range.
-100 100
, 10 [ range.
-100 100
, 10 [ range.
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