推荐回答(3个)
所谓要素的最优组合就是能以既定的成本生产最大产量或者以最小的成本生产既定产量的生产要素投入的组合。
标准是MPL/PL=MPK/PK
其中,PL为劳动的价格(例如工资),PK为资本的价格(如利息率或租金等),MPL和MPK分别表示劳动和资本的边际产量。

什么是生产要素最优组合
生产要素最优组合是指既定成本下产量最大化或者既定产量下成本最小化的生产要素投入组合。
生产要素最优组合原则是生产各要素的边际产量相同。
标准是 =
生产要素最优组合条件
能满足要素投入的最优组合的条件是:要素投入的最优组合发生在等产量曲线和等成本线相切处,即要求等产量曲线的切线斜率与等成本线的斜率相等。
1.成本既定时产量最大的要素组合
把企业的等产量曲线和相应的等成本线画在同一个平面坐标系中,就可以确定企业在既定成本下实现最大产量的最优要素组合点。当等产量曲线和等成本线相切时,其切点即为生产的均衡点。生产要素投入量需要满足的条件为:
=
rLL+rKK=C
2.产量既定时成本最小的要素组合
如果,生产者在既定的产量条件下力求最小的成本,最优的劳动投入量和资本投入量的组合是把企业的等产量曲线和相应的等成本线画在同一个平面坐标系中,就可以确定企业在既定产量下实现成本最小的最优要素组合点,即生产者均衡点。
=
f(L,K)=y
这些条件说明,无论是既定成本下的产量最大还是既定产量下的成本最小,说明寻求生产要素最优组合的厂商都将把生产要素的数量选择在每单位成本购买的要素所能生产的边际产量相等之点。另一方面,生产要素最优组合也是厂商利润最大化的选择。以成本既定的情形为例。如果每单位成本获得的边际产量不相等,比如,这时把用K的一单位成本用于购买L将会在保持成本不变的条件下增加总产量,从而增加利润。因此,追求技术上的最优恰好与厂商的利润最大化相一致。
生产要素最优组合不同的表现
1)等产量线和等成本线
把等产量线和等成本线结合起来,就可得出厂商要素最优组合的条件,如图:等成本线和等产量线的切点,E点所代表了劳动与资本的数量表示企业生产要素的最佳配置,此时
或者
此时,厂商每单位成本购买任意一种生产要素所得到的边际产量都相等,厂商才能用既定的成本生产最大的产量,在E点表示:在成本不变的情况下,产量最大,或者在产量不变的情况下,成本最低。
2)生产扩展曲线
生产扩张线表示在生产要素价格和其他条件不变情况下,随着厂商成本的增加,厂商的生产要素最优组合点。描述出来的轨迹,它由所有等产量曲线与等成本线的切点所构成,它表示,在生产要素价格和其它条件不变的情况下,当生产过程的投入(成本)增加时,厂商必然会沿着生产要素的最优组合来扩展其生产。
3)生产要素最优组合与厂商利润最大化
厂商生产要素的最优组合与利润最大化之间是一致的。
相关条目
生产者均衡
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