def _expr_big(cls, x, n): if n.is_even: return (acoth(sqrt(x)) + I * pi / 2) / sqrt(x) else: return (acoth(sqrt(x)) - I * pi / 2) / sqrt(x)
def _expr_big(cls, x, n): if n.is_even: return (acoth(sqrt(x)) + I*pi/2)/sqrt(x) else: return (acoth(sqrt(x)) - I*pi/2)/sqrt(x)