110年 - 110 國立政治大學_碩士班暨碩士在職專班招生考試_ 經濟學系:個體經濟學#105665

(a)(5分)當Px=0時,消費者效用極大化的問題沒有最適解。

(b)(5分)當消費者的偏好滿足越多越好的假設時,X和Y財貨必定是正常財。

(c)(5分)X和Y財貨的受補償需求曲線的斜率一定是負數

(d)(5分) V(tPx,tPy.t/)=tV(Px,Py,D)1＞0

(e) (5分)

(a)(5分)當F(tK,tL)＞tF(K,L),t＞0時,其邊際成本一定是在遞減的階段。

(b)(5分)當此廠商利潤極大化時,其邊際成本一定是在遞增的階段。

(c)(5分)C(te,tv,tw)=tC(Q,y,w),t＞0

(d)(5分)成本函數對要素價格的一階偏微分等於要素需求函數。

(e) (5分)

(a) (5 points) Suppose that Bryan's utility function is . In this case, where should he build his dam and lodge? Please explain. Now the River God is offering insurance to Bryan. Despite the location, the insurance that pays back $1 costs $0.8.

(b) (10 points) Please use a graph with value on the horizontal axis and utility on the vertical axis to explain at which location Bryan would be willing to buy more insurance. What is the economic interpretation of your answer

(c) (15 points) When insurance is available, where will Bryan choose to build his home? [HINT: find the optimal insurance to buy for each location.]

(a) (2 points) What is their common characteristic?

(b) (3 points) What is the main difference between them?

(c) (10 points) Draw the long-run equilibrium of an individual firm in these two markets, with quantity on the x-axis and price on the y-axis. One graph for each type of market. Explain how they are different in the long-run equilibrium.

(d) (5 points) How does the difference in the nature of these two types of markets drive the different long-run equilibria?

110年 - 110 國立政治大學_碩士班暨碩士在職專班招生考試_ 經濟學系:個體經濟學#105665

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