Calculus
Neither maximum nor minimum at (0,0)\(\left\)(0,0\(\right\)),
Local maximum at (32,278e3)\(\left\)(\(\frac\)32,\(\frac{27}{8e^3}\]\right\)).
Local minimum at (0,0)\(\left\)(0,0\(\right\)),
Local maximum at (0,0)\(\left\)(0,0\(\right\)),
Local minimum at (32,278e3)\(\left\)(\(\frac\)32,\(\frac{27}{8e^3}\]\right\)).