Re: [商管] [經濟]-無異曲線分析
※ 引述《musicisgood (萬年青)》之銘言：
: Suppose that the consumer's preferences can be represented by the quasi-linear
: utility function U=f(X1)+X2,f'>0 ,f''<0,where X1 and X2 are goods 1 and 2,
: respectively.
: Show that the income elasticity of demand for good 1 is zero.
: 感覺是跟MRS有關,
: 感謝大大們!!
相切條件：f'= P1/P2 --> MRS(X1) = P1/P2 ----(*)
限制條件：P1X1 + P2X2 = M
由(*)可解得 X1 = X1(P1, P2)
故：X1之所得彈性 Em1 = dlnX1 / dlnM = 0
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