nerdamer.acosh(x: ExpressionInput): Expression
Computes the inverse hyperbolic cosine of an expression.
- acosh(1) = 0
- acosh(0) = iπ/2
- acosh(+∞) = +∞
- For inputs less than 1, returns a complex result via log(x + sqrt(x²−1)).
throwscore!UndefinedError If x is −∞.
Parameters
| Name | Type | Description |
|---|
x | ExpressionInput | The input expression (domain [1, ∞) for real results). |
Returns
Expression — The inverse hyperbolic cosine of x.
Examples
acosh(1).text() // "0"
// Symbolic
acosh('x').text() // "acosh(x)"
