这是一道作业题,马上要交了,实在想不出来,请大家指点,本人愚钝,希望能给出详细的解答,先谢过啦。
An industry consists of a large number of firms, each of which has a cost function of the form
c(w1,w2,y)=(y2+1)w1+(y2+2)w2
(1)Find the average cost curve of a firm and describe how it shifts as the factor price ratio w1/w2 changes
(2)Find the short-run supply curve of an individual firm
(3)Find the long-run industry supply curve
(4)Describe an input requirement set for an individual firm