def provideJ(self):
        """Caculate and return the Jacobian"""

        df_dx = 2.0*self.x - 6.0
        df_dy = 2.0*self.y + 8.0

        return np.array([[df_dx, df_dy]])
dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/contrib/testmpi/test_mpi_opt.py/Parab1.provideJ/original