the question is on the picture thank you

7. Prove the following statements, (a) For the Cobb-Douglas production function, q(k,l) = kal. Show that: (i) if a + 1 the function is not concave. Assuming, a, 3 E (0, 1) (b) Show that the function f ($1,502, ...:cn) = 117-1939" is homogeneous of degree Ego\". 7. 'L