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等产量曲线

等产量曲线isoquant),表示在技术水平不变的条件下,生产同一产量的两种生产要素投入的所有可能性的组合。等产量曲线与原点的距离的大小表示产量水平的高低,离原点越远代表产量水平越高。 個體经济学术语,在该曲线上,尽管生产要素配比不同,但产出相同。

等产量曲线图,其中产出量 Q3 > Q2 > Q1. 典型的选择是劳动为投入X,资本为投入Y,两者投入更多的话则产出更高。
A) 投入两者完全替代的情况
B) 投入两者完全互补的情况

性质

1.正常的等产量线凸向原点。它表示随着一种生产要素每增加一个单位,可以替代的另一种生产要素的数量将逐次减少。等产量线一般具有凸向原点的特征,这一特征是由边际技术替代率递减规律所决定的。

2.由于边际技术替代率为负,所以正常的等产量线是递减的。


参见


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等产量曲线
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