, , , - . , . .
( ) , , .
. . , - , . , , , , , , .
, , , , . . , .
3. .
, .
50% , . ?
50% - , . , , . , , .
8.17 . , D1 , D2. , , . , .
. 8.17.
, , , , .
.
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, (q) m , .. m . . . , . .
1, 2,... m , , q 1 = D 1 (p 1), , q i = D i (p i), , q m = D m (p m) . - q :
, (q). , m (pi).
∑ pi(D(pi)) TR i, (8.22) :
= ∑TR i (q i) - (∑q i) → max (8.23)
m q i (i = 1,2, ,m) , , :
MR1(q1) = MC (q),, MRi(qi) = MC (q),, MRm(qm) = MC (q) (8.24)
(8.24) , qi pi, , :
MR1(q1) = MRi(qi),, MRm(qm) = MC (q) (8.25)
, , .
, , . , , (. (2.45) 2.3.1, 2):
(8.25), , , :
1 2 .
(8.26):
(8.26) (8.27) . 1 = p (q1) > p (q1) = 2, , .
, , .
. :
p1 = a1 b1 q1 (a1 > 0, b 1 > 0) p2 = a2 b2 q2 (a2 > 0, b2 > 0). (8.28)
MR1(q1) MR2(q2) 8.18.(1) 8.18.(2). (8.25): MR1(q1) = MR2(q2) = MC (q), ( MC(q)), ,
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q* = q1* + q2*, ,
MR1(q1*) + MR2(q2*) = MC (q*). (8.29)
MR1(q1) + MR2(q2) MR(q). MR(q) MR1(q1) MR2(q2) 8.18.(3).
. 8.18.
(8.26).
, . : p1 = 20 q1 p2 = 16 2q2. , : MC = 2q.
: 1) ;
2) , , 20;
3) (8.27).
. 1) ,
MR1(q1) = MR2(q2) = MC (q), , .
MR(q) = MR1(q1) + MR2(q2) . MR1(q1) = 20 2q1, MR2(q2) = 16 4q2.
q1 q2 MR:
q1 = 10 - MR/2,
q2 = 4 - MR/4.
q = q1 + q2 = 14 - 3MR/4. ,
MR(q) = 56/3 (4/3)q = 18,7 (4/3)q = MR1(q1) + MR2(q2).
2) . - (.(2.38), 2.3 2) :
MR(q) = 56/3 (4/3)q = 2q = MC(q).
, q* = q1* + q2* = 5,6. MR(q*) = MC(q*) = 11,2.
MR(q*) = 11,2 q1 = 10 - MR/2 , q1* = 4,4. MR(q*) = 11,2 q2* = 4 - MR/4 , q2* = 1,2 q2* = q* - q1* = 5,6 4.4 = 1,2.
3) 1* 2*, 2) q1* = 4,4 q2* = 1,2. 1* = 20 4,4 = 15,6 2* = 16 - 2∙1,2 = 13,6.
4) .
* = TR 1 (q 1*) + TR 2 (q 2*) - TC (q*) = [TR 1 (q 1*) + TR 2 (q 2*)] - [VC(q*) + FC].
:
* = [15, 6 ∙4,4 + 13,6∙1,2] - [5,6∙5,6 + 20] = 84,96 - 51,36 = 33,6.
5) : 1 = - (39/11), 2 = -(17/3), , .
, . , , , .
, , , .
[1] ., , 1, , , 2000, .211.
[2] . . ., 1985. .1, 16.
[3] .. , ., , 1999, .476.
[4] J. Church, R. Ware (2000). Industrial Organization, Irwin McGraw-Hill, 163.
7 ., , ., -, 2000, . 403.
8 Waldman D.E, Jensen E.J. Industrial Organization. Theory and practice. P.600.
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