Soru
Exercise 2.3 Suppose that the supply and demand sets for a particular market are S= (q,p)vert 3p-q=5 , D= (q,p)vert 3p+q^2+2q=9 __ Sketch S and D and determine the equilibrium set E=Scap D . Comment briefly on the interpretation of the results. I
Çözüm
4.3
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Elit · 8 yıl öğretmeni
Uzman doğrulaması
Cevap
To find the equilibrium set
, we need to find the intersection of the supply set
and the demand set
. This means we need to find the values of
and
that satisfy both equations.Let's start by solving the system of equations:1.
2.
We can solve this system of equations using substitution or elimination method. Let's substitution method:From equation 1, we can express
in terms of
:
Now, substitute this expression for
into equation 2:
Simplify the equation:
Now, we can solve this quadratic equation using factoring or the quadratic formula. Let's use the quadratic formula:
In this case,
,
, and
. Plugging these values into the quadratic formula, we get:
This gives us two possible solutions for
:
Now, we can substitute these values of
back into the expression for
to find the corresponding prices:For
:
For
:
So, the equilibrium set
consists of two points:
and
.The interpretation of these results is that there are two possible equilibrium points in this market. The first point,
, represents a higher quantity and price, while the second point,
, represents a lower quantity and price. This suggests that there may be two different market conditions that can lead to equilibrium, depending on factors such as demand and supply.