Show that the Cobb–Douglas production function Q = AKa Lb is homogeneous of degree a + b and that...

Show that the Cobb–Douglas production function Q = AKa Lb is homogeneous of degree a + b and that (a) K −Q −K 1 L −Q −L 5 (a 1 b)Q (b) K2 −2 Q −K2 1 2KL −2 Q −K−L 1 L2 −2 Q −L2 5 (a 1 b)(a 1 b 2 1)Q