我有兩樣野想問
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第一就係根據以下呢一張圖:
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上圖係表示左一個change in the whole set of indifference curve to the 'right'
書話係因為有an increase in preference to good X
書上就話MRSxy rises for every unit of X
但我就唔明點解
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因為兩條線如果係要tangent既話,咁兩條姐係一定要係有同一個slope
本書話當MRSxy = Px/Py,咁兩條線就會tanget啦,姐係equilibrium solution
但係條budget line個slope一定會係constant
代表左Px/Py係冇變到
咁理論上無論條indifference curve點郁都好
MRSxy依然係冇變到,因為budget line個slope冇變到
係唔係有咩條件我冇諗到,忽略左
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本書話會變,令我諗左好耐都唔明
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另外一樣野就係
我想問下點解Giffen good喺有competition之中
就唔會存在
我又係諗左好耐都諗唔通
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高手求你解答我!
詳細小小,唔該
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希望大家幫下手啦
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