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3. The price of good A goes up As a result the demand for good B shifts to the left. From this we can i nfer that: A. good A is a normal good.. B. good B is an inferior good. C. goods A and B are substitutes. D. goods A and B are complements. 4,说一说微观经济学和宏观经济学的区别。
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Answer #1

%,D.QB Cross Elasticity. Ex =

The change in price of commodity A is greater than 0. That is a positive value.

While the quantity demanded of commodity B shifts to left thus, the quantity change is negative.

The resultant cross elasticity is Negative.

Hence the two goods are complement to each other.

D. Good A and B are complement.

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