But now it looks like some function of x,y, z equals zero.
但是现在它看起来像x，，y，，z，的函数等于，0。
That means the z component of n is going to be zero.
就是说n的z分量等于。
Without a budget constraint, the individual would continues to increase his consumption of X, Y, z,...... until their marginal utilities became zero.
若没有预算约束，个人将不断增加X,Y,Z……的消费，直到它们的边际效用为零。
Without a budget constraint, the individual would continues to increase his consumption of X, Y, z,...... until their marginal utilities became zero.
若没有预算约束，个人将不断增加X,Y,Z……的消费，直到它们的边际效用为零。
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