一家竞争性厂商的短期成本函数如下:C(q)=q³-8q³+30q+5(1)求出MC、AC和AVC,并在图形

一家竞争性厂商的短期成本函数如下:C（q)=q³-8q³+30q+5（1)求出MC、AC和AVC,并在图形

一家竞争性厂商的短期成本函数如下:

C(q)=q³-8q³+30q+5

(1)求出MC、AC和AVC,并在图形上表示出来。

(2)当价格位于哪一区间时厂商产量为零？

(3)在图上标出厂商的供给曲线。

(4)当价格为多少时企业产量为6？

A competitive firm has the fallowing short - run cost function: C(q)=q³-8q²+30q+5.

a. Find MC, AC, and AVC and sketch them on a graph.

b. Al what range of prices will the firm supply zero output？

e. Identify the firm's supply curve on your graph.

d. At what price would the firm supply exactly 6 units of output？