Questions tagged «cost-functions»

3
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对于连续可微的产品F(k ,l )F(ķ,升)f(k,l) ,是这样的命题 “ F(k ,l )F(ķ,升)f(k,l)在减少返回至比例⇔ ˚Fl lFk k- f2k l> 0⇔F升升Fķķ- Fķ升2>0\Leftrightarrow f_{ll}f_{kk}-f_{kl}^2>0 ” 总是如此,我已经检查了Cobb-Douglas的功能,并相信它也适用于所有Constant-Elasticity功能,有人可以给我一些提示或展示一些反例吗? 这里我们将F(k ,l )F(ķ,升)f(k,l)定义为如果对于域中的所有(k ,l ),对于t > 1,F(t k ,t l )< t f(k ,l )F(Ťķ,Ť升)<ŤF(ķ,升) f(tk,tl)1(k ,l )(ķ,升)(k,l)
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