Exercise 9.28. (1) Derive equations (9.52) and (9.53). (2) Show that for sufficiently large, the steady-state

Exercise 9.28. (1) Derive equations (9.52) and (9.53). (2) Show that for ζ sufficiently large, the steady-state equilibrium capital-labor ratio, k∗, can exceed kgold, so that there is overaccumulation. Provide an intuition for this result.