推 applexgreen:是非? 07/28 21:06
推 SONGya168:是中央93唷 T修改標題後解鎖文 07/28 21:57
The demand for mini cassette players can be characterized by the following point
estimates: price elasticity=-2 , cross-price elasticity with AAbatteries=-1.5 , and
income elasticity=3 . Accordingly, a 3% price reduction in cassette players would be
necessary to overcome the effect of a 2% decline in income.
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