HP 39g+ - Manual (Page 145)

Using mathematical functions 10-9
Constants
The HP 39G/40G has an internal numeric representation for
these constants.
e Natural logarithm base. Internally represented as
2.71828182846.
e
i Imaginary value for
√−1
, the complex number (0,1).
i
MAXREAL Maximum real number. Internally represented as
9.99999999999
x 10 499 .
MAXREAL
MINREAL Minimum real number. Internally represented as
.
MINREAL
π
Internally represented as 3.14159265359.
π
Hyperbolic trigonometry
The hyperbolic trigonometry functions can also take complex
numbers as arguments.
ACOSH Inverse hyperbolic cosine : cosh
–1
x.
ACOSH (value)
ASINH Inverse hyperbolic sine : sinh
–1
x.
ASINH (value)
ATANH Inverse hyperbolic tangent : tanh –1 x.
ATANH (value)
COSH Hyperbolic cosine
COSH (value)
SINH Hyperbolic sine.
SINH (value)
TANH Hyperbolic tangent.
TANH (value)
1 10
499 – Ч