(1)A utility maximizing consumer purchases two commodities. The utility function is U= Q1 Q2 + 3Q1 + Q2. The prices of both commodities are $8 and $12, respectively. The consumer has an income of $212 to spend on the two goods and wants a combination of both goods that will maximize the utility function. (a)Set up the Lagrange function that could be used to determine the optimum combination of both goods required to optimize the utility function. (b)Use the framework of the Lagrange function to find the optimum combination of Q1 and Q2. (c)lf the consumer is willing to spend one additional dollar on these commodities, determine the marginal utility derivable from this extra expenditure.

Microeconomic Theory
12th Edition
ISBN:9781337517942
Author:NICHOLSON
Publisher:NICHOLSON
Chapter4: Utility Maximization And Choice
Section: Chapter Questions
Problem 4.12P
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(1)A utility maximizing consumer purchases
two commodities. The utility function is
U= Q1 Q2 + 3Q1+ Q2.
The prices of both commodities are $8 and
$12, respectively. The consumer has an
income of $212 to spend on the two goods
and wants a combination of both goods
that will maximize the utility function.
(a)Set up the Lagrange function that could
be used to determine the optimum
combination of both goods required to
optimize the utility function.
(b)Use the framework of the Lagrange
function to find the optimum combination
of Q1 and Q2.
(c)lf the consumer is willing to spend one
additional dollar on these commodities,
determine the marginal utility derivable
from this extra expenditure.
(d)Use the "Bordered Hessian" determinant
to evaluate the second order condition for
optimization.
Transcribed Image Text:(1)A utility maximizing consumer purchases two commodities. The utility function is U= Q1 Q2 + 3Q1+ Q2. The prices of both commodities are $8 and $12, respectively. The consumer has an income of $212 to spend on the two goods and wants a combination of both goods that will maximize the utility function. (a)Set up the Lagrange function that could be used to determine the optimum combination of both goods required to optimize the utility function. (b)Use the framework of the Lagrange function to find the optimum combination of Q1 and Q2. (c)lf the consumer is willing to spend one additional dollar on these commodities, determine the marginal utility derivable from this extra expenditure. (d)Use the "Bordered Hessian" determinant to evaluate the second order condition for optimization.
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