irene2023-04-17 00:38:20
老师能帮忙看下这题,估计是20年mock题,说cost 如 capital, Technology, ppe 即使在Long Run 中,都还是算Fixed cost 不算variable cost?
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roushan2023-04-17 15:11:26
是的同学,这个题目是正确的。
“The “long run” is long enough that wages, prices, and expectations can adjust but not long enough that physical capital is a variable input. Capital and the available technology to use that capital remain fixed.
This condition implies a period of at least a few years and perhaps a decade. The truly long run, in which even the capital stock is variable, may be thought of as covering multiple decades. Consideration of the very long run is postponed to our subsequent discussion of economic growth。”摘自23年原版书
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