computes the element-wise inverse hyperbolic cosecant of the argument.
y = acsch(x)
a real or complex array.
a real or complex array.
Computes the element-wise inverse hyperbolic cosecant of the argument. For real argument with absolute value greater than 1 the result is real.
The following equalities hold: acsch(z) = -acsch(-z) =
asinh(1/z) = csgn(%i+1/z)*asech(-i*z)-%i*%pi/2 =
%i*acsc(%i*z)