在两时期投资模型中,假定:生产函数为Q=2K1/2,初始资本存量为K1=81,利率为11%。 a.如果资本不折旧。最佳投资量是多少? b.如果资本每年折旧10%,(a)的答案会有什么变化? In the two-period model of investment.assume the following:the production function is Q=2K1/2,the initial stock capital is K1=81,the interest rate is 11 percent. a.What is optimal amount of investment if capital does not depreciate? b.How would your answer to(a)change if capital depreciated by 1 0 percent per year?