求解 几道微观经济的图 急 在线等

Read the following descriptions of economies. For each one, define and draw
the budget set. State if the budget set is compact or not.
a) There are two goods: leisure (l), and a composite good (m): The price for
the composite good is always 1. Agents are endowed with a fixed income y > 0,
but also with an endowment in time of 1 unit. They can spend their time on
leisure, but they can also decide to work. An agent receives a wage p per unit
of time worked.
b) An agent can buy two diferent goods, has an endowment of money y = 1;
and faces prices p1 = p2 = 1 .He was also issued a coupon that allows him to
obtain 1 unit of good 1 for free. This coupon cannot be exchanged for money,
traded to anyone else or kept for later.
c) There are two goods (1 and 2), for which prices are p1 and p2: The
government requires that everyone have at least one unit of good 2. Agents are
endowed with a fixed income y >= p2:

求好心人 帮忙～～  磕头ing

急·····此犒赏  下周一前 有效···(2010年10月18之前)

看来看去这三问都是一样的
图不好传 就说一说这么做 在最一般的情况下
基本框架是在二维消费下 价格为P1 P2 初始禀赋为y 可自由支配禀赋为w 不可自由支配禀赋为v
于是你把所有禀赋加起来得到y+w+v 可以购买(y+w+v)/P1的物品1 (y+w+v)/P2的物品2
这就形成了一个二维三角形 坐标轴分别为good 1和good 2
但是由于有不可自由支配禀赋 把不现实的部分切掉就可以了 比如第二问 good2在[1,2]区间的一部分切掉
由于closed加finite可以推出compact
所以三问应该都是compact的