acosh
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constexpr Complex acosh(const Complex &z) noexcept
Returns the complex inverse cosh [1] of a complex number \(z\).
Parameters
- const Complex &z
A complex number.
Returns
- type Complex
A complex number.
The inverse cosh function of a complex number is defined as:
\[\cosh^{-1}z = \log(z + \sqrt{z^2 - 1})\]
Example
Complex z = 3 + 4_j;
std::cout << acosh(z) << "\n";
Output:
2.30551 + 0.936812j
References