葛同学2018-02-06 22:37:02
If the price elasticity coefficient of the demand curve for paper clips is equal to –1, demand is: A. elastic. B. inelastic. C. unit elastic 为什么这题选C啊?
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金程教育顾老师2018-02-07 11:08:10
学员你好,弹性的绝对值为1,称之为unit elastic
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