劳动力边际产量总产量

劳动力边际产量总产量
2025-04-07 20:33:39
推荐回答(1个)
回答1:

已知生产函数Q=KL-0.5L2(2是平方)-0.32K2。Q表示产量,K代表资本,L代表劳动,若K=10,求:①劳动的平均产量函数和边际产量函数。②计算当总产量、平均产量和边际产量达到极大值时,厂商雇佣的劳动量。③证明当平均产量达到极大值时,APL=MPL=2(L是下标)已知某完全竞争行业中的单个厂商的短期成本函数为STC=0.1Q3-2Q2+15Q+10试求:(1)当市场上产品的价格为P=55时,厂商的短期均衡产量和利润;(2)当市场价格下降为多少时,厂商必须停产;(3)厂商的短期供给函数①劳动的平均产量AP(L)=Q/L=K-0.5L-0.32K²/L=10-0.5L-32/L劳动的边际产量MP(L)=әQ/әL=K-L=10-L②当Q=KL-0.5L²-0.32K²=10L-0.5L²-32=-0.5(L-10)²+18达到最大,即L=10当平均产量AP(L)=Q/L=10-0.5L-32/L达到最大时,即0.5L=32/L,解得L=8当劳动的边际产量MP(L)=10-L达到最大时,即L=0③如上题,当L=8时,AP(L)最大,此时AP=10-0.5*8-32/8=2,MP(L)=10-8=2所以AP(L)=MP(L)=2(1)SMC=dSTC/dQ=0.3Q²-4Q+15,MR=P=55当SMC=MR时达到均衡,即0.3Q²-4Q+15=55解得Q=20或Q=-2/0.3(略去)利润=PQ-STC=55*20-310=790(2)SAC=0.1Q³-2Q²+15Q平均可变成本AVC=SAC/Q=0.1Q²-2Q+15=0.1(Q-10)²+5所以当Q=10时,AVC最小为5因此,当市场价格P≤AVCmin=5时,厂商必须停产(3)厂商的短期供给曲线就是位于平均可变成本AVC曲线以上的那一部分短期边际成本曲线SMC,又因SMC曲线必通过AVC曲线的最低点因此,厂商的短期供给函数为P=0.3Q²-4Q+15(Q≥10)

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