135****96972022-03-17 20:03:15

The AVC curve is U-shaped, declining at first due to efficiency, but eventually increasing due to dim inishing returns. The AFC curve decreases as output increases, and eventually flattens out. The ATC is U-shape because it is the sum of the decreasing-to-flat AFC curve plus the U-shaped AVC curve. ATC = AFC+AVC. 老师，这道题目的知识点，在cross elasticity这节课里面没有哦。请问在哪节课出现的