and dn = 1. Let in = an)-a(n-1) an-1) respectively. Show that: a(n)-a(n-1) an) the interest rate and the effective discount rate, a) The effective interest rate is a decreasing function respect to n under the simple model. b) The effective interest rate is a constant function and independent to n under the compound model. c) The effective discount rate is a creasing function respect to n for 0)