范里安中级微观经济学知识点总结.docx

范里安中级微观经济学知识点总结
I. Summary
Marginal analysis：1:Marginal magnitudes=tangena=slopeofTM
2:Averagemag nitudes=ta ngentB =slopeof ray
TM MM <0
L
3: Total magnitude max ' MM 0 { TM MM>0
MIN
Imposing a tax/giving a subsidy; changingincome/price.
X2
In creas ing in come
In creas ing price
m' /p2
Budget line
Indifferenee curves: cannotcrosseachother.
Following aresomeindifferenee curves.
Neutrals
Goods
Perfect complement
Good2
Utility function:型
mv2
dx2
dxi P
MRS( forgoodo n©
Pi
Optimal
(In terior/bo un dary/k inky
MVi
choice— P
L piXi
MD2 MVn
F2 Pn
P2X2 PnXn m
soluti ons)
Graphically, it is the point where budget line and indifferencescurvestangent
Luxury goods:
.Normal goods:
By in come
2
Necessarygoods -弓 <0 m
Inferior goods: — <0 m
Ordinary Good
Giffen Good
Perfectcompleme nt:
Xi
X2
? Cobb-Douglas:
Xi
X2
m
Budget lines
X1