Question

In: Economics

1. Suppose the consumer has Cobb-Douglas preferences U(x1, x2)=X1aX2b Find out Ordinary Demands 2. Suppose the...

1. Suppose the consumer has Cobb-Douglas preferences U(x1, x2)=X1aX2b Find out Ordinary Demands

2. Suppose the consumer has a perfect complement preferences U(X1,X2)=min{aX1, X2} Find out Ordinary Demands

Solutions

Expert Solution

Answer 1.

Let be price of good , price be of good and represent the consumer's income. Therefore, represents consumer's budget constraint. "For maximizing utility, marginal rate of substitution must be equivalent to price ratio. "

" Marginal rate of substitution is calculated using: "

Numerator of is given by  .

and denominator of   is given by  .

  

Equating to price ratio , imply:

This can be written as :  

Put in ----------

Put in   ---------------------------

So, ordinary demand of is and of is .

Answer 2.

Let be price of good , price be of good and represent the consumer's income. Therefore, represents consumer's budget constraint.

In this case optimal demand occurs at a point where

putting in imply

Putting in to get

So, ordinary demand of is   and of is   .


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