JS Practice — Built-in Objects

Math.atanh() Out of Domain Returns NaN

📖 Usage Example

// Inverse hyperbolic tangent (input in (-1, 1))
Math.atanh(0)    // → 0
Math.atanh(0.5)  // → 0.5493...

Use Math.atanh() to compute the inverse hyperbolic tangent of a number strictly between -1 and 1.

Math.atanh(x)

Math.atanh() is only defined for |x| < 1. Values outside this range return NaN.

Challenge: Verify that Math.atanh(2) returns NaN.

💡 Hints (2)