有三道题求楼主帮忙解答下

a求消费者需求函数是求两个人对1的需求总和和两个人对2的需求总和是吧?求出边际效用之后再怎么做呢?剩下的问就都不会了。




Please exlain the first and second fundamental theorems of welfare economics.Moreover,what*s implications of theorem to the role of government in market economy?没太懂第二句话是什么意思。
真诚求解答,谢谢