Question: 1. Find ∂y/∂x and ∂y/∂z when
(a) y = 6 + 3x + 16z + 4x2 +2z2
(b) y = 14x3z2
(c) y = 9 + 4xz - 3x-2z3
2. Show that the law of diminishing marginal productivity holds for the production function Q = 12K0.4L0.4. Will the MPL schedule take the shape shown in Figure?