. , - , . , , .
. , - . , () ():
MSC = + ,
MSC - (marginal social cost);
- (marginal private cost);
- (marginal external cost).
, . , - . , . . - , , . , . Q1 1. 1, , , , MSB, . . = MSB. , . , , Q2 2. 2 MSB = MSC.
, . . .
, :
MSB = + ,
MSB - (marginal social benefit);
- (marginal private benefit);
- (marginal external benefit).
. , . , , , . , , , , .
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, . . .
, . ( ) (). .
- , , .
- , , . , , , .
, . -, . -, . , , , , .