def _apply_operator_JzKetCoupled(self, ket, **options):
        jp = JplusOp(self.name)._apply_operator_JzKetCoupled(ket, **options)
        jm = JminusOp(self.name)._apply_operator_JzKetCoupled(ket, **options)
        return Integer(2)/(jp + jm)
dataset/ETHPy150Open sympy/sympy/sympy/physics/quantum/spin.py/JxOp._apply_operator_JzKetCoupled/swapped operands of `/`