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.
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