sinh method
Calculate the complex hyperbolic sine function (sinh(z)).
Implementation
Complex sinh() {
final a = _re;
final b = _im;
// Re: sinh(a) * cosh(b)
final realPart = _sinH(a) * _cosH(b);
// Im: cosh(a) * sinh(b)
final imagPart = _cosH(a) * _sinH(b);
return Complex(realPart, imagPart);
}