大一微观经济学练习

1.K = 10

[TP]Q = f(L)= 20L-. 25-. 5 * 100 = 20L-50.25

AP = Q/L = 20 - 50.25/L

MP = dQ/dL = 20

2.TP,AP是L的单调函数,所以TP_max = +infty,L = +infty。

AP_max = 20,L = +infty

MP是常数函数MP_max = MP = 20。

3.AP = MP = & gt20 - 50.25/L = 20 = >L = +infty

此时输出最大化TP = +infty。