47
<Example 1>
Integration calculation
(1)
Let the demand curve of the overall market be D = 3000 - 10P, the supply curve be
S = 20P, the equilibrium price be 100, and the equilibrium output be 2000.
(1) Find the consumer surplus of the overall market.
(2) Find the producer surplus of the overall market.
(3) Find the total surplus of the overall market.
(3000 - 10x - 2000) dx
Operation Display
100
103000
2000
0
x
(2)
100
202000
x
100
0
(2000 - 20x) dx
100
0
(3000 - 10x - 20x) dx
100
0
(This example is for EL-W516T only.)
dx
x
dx
0
dx
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