ECON100A_6

ECON100A_6 - Review For Midterm 1 1 Review Session Chem1179...

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 1/4/2008 1 Review For Midterm 1
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 1/4/2008 2 Announcements for Exam Week Review Session: Chem1179, Sat. 10:30-12:00noon
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 1/4/2008 3 Question  Are you here? A. Yes B. No C. Yes, but I wish I were in Acapulco
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 1/4/2008 4 Preferences Defined over bundles: (x 1 , x 2 ) (x 1 , x 2 ) Plot in coordinate system Monotonicity Indifference curves Marginal rate of substitution Slope of indif curve at a given bundle X 1 X 2
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 1/4/2008 5 Utility U(x 1 ,x 2 ) “Represents” preferences Attaches a number to a bundle Indif curves are level curves of U(x 1 ,x 2 ) U(x 1 ,x 2 ) not a unique representation. Increasing or decreasing transformations of U(x 1 ,x 2 ) represent same preferences It’s like renumbering indif curves X 1 X 2 U(x 1 ,x 2 )=1 U(x 1 ,x 2 )=52 U((x 1 ,x 2 ))=7
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 1/4/2008 6 Marginal Utility MU 1 (x 1 ,x 2 )= : How much utility you get form one more unit of good 1. MU 2 (x 1 ,x 2 )= : How much utility you get form one more unit of good 2. Depends on how much you already have of both goods Also depends on form of utility function 1 2 1 x ) x , u(x 2 2 1 x ) x , u(x
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 1/4/2008 7 Utility and Marginal Rate of Substitution 
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ECON100A_6 - Review For Midterm 1 1 Review Session Chem1179...

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