.
.
:
I. , (price elasticity of demand).
EpD = | ∆Q/Q | = | Q % | , (6.1) | |
∆P/P | % | ||||
: | EpD | -- ; | |||
∆Q/Q | -- ; | ||||
∆P/P | -- . |
, ED > 1 , .
, ED< 1, , .
, ED= 0, , = ∞ (.6.1).
& , , 40%, 10%, : -10%: 40% = -0,25.
5% 15%, : 15%: -5% = -3
, , . ? .
|
, :
, (, );
, . , 2 4 2 . , 200 400 200 . . , ;
, . , , 1 . . . , , . 1000 , -- . .., , .
, .
|
|
|
.6.2 . , ,
, D 1 D 2.
E D = | -∆Q | x | = | -(Q2-Q1) | x | (2+1)/2 | = | -(Q2-Q1) | x | (2+1) | |
∆ | Q | (2-1) | -(Q2+Q1)/2 | ( 2 - 1) | (Q 2 + Q 1) |
:
1. - , . .
, , .
, , , .
2. . , .
3. . , , .
, , 0,15, 0,13, , 0,20, > 1.
4. . , , , . , .
5. . , , .