def execute(self):
        """Optimal solution (minimum): x = [6.6667,-7.3333]"""
        x = self.x
        self.f_xy = (x[0]-3.0)**2 + x[0]*x[1] + (x[1]+4.0)**2 - 3.0
dataset/ETHPy150Open OpenMDAO-Plugins/pyopt_driver/src/pyopt_driver/test/test_pyopt_driver.py/ArrayParaboloid.execute/original