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这道微观经济学的题怎么解?

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/07/17 20:16:34
这道微观经济学的题怎么解?
If the supply curve for news magazines is an upward-sloping line and goes through the point (quantity supplied=0,price=$1.00),then the price elasticty of supply for news magazines is
A.less than one
B.greater than one
C.perfectly inelastic
D.equal to the price elasticity of demand for news magazines.
是这样解的.弹性E=(ΔQ/Q)/(ΔP/P) 设供给曲线上一点(Q1,P1),又经过(0,1),所以弹性E=(ΔQ/ΔP)/(P/Q)=[(Q1-0)/(P1-1)]/(P1/Q1)=P1/(P1-1)>1选B