ACOSH (Primitive Spread Function) returns the inverse hyperbolic cosine of the specified value.

SYNTAX:

ACOSH(value)

REMARKS:

For the value argument, you can specify any real number greater than or equal to 1.

Note that acosh(cosh(value)) = value.

EXAMPLES:

ACOSH(1)=0
ACOSH(10)=2.9932228461