.
:
Ex,yD = | ∆Qx/Qx | = | ∆Qx | x | Py | , | (6.3) | |
∆Py/Py | ∆Py | Qx |
, , . Ex , D >0, (), Ex , D <0, , Ex , D =0, .
. :
EID= | ∆Q/Q | (6.4) | |
∆ I / I |
(I) -.
, , .
, .
.
EID>0, .
, 0<EID< 1, , (, , ).
EID>1 , .
, , .
, , (0<EID< 1), (EID>1) , .
() .
.
, , .
.
EpS = | ∆Q/Q | , | (6.5) | |
∆P/P |
. :
1. .
2. .
3. , . , , .
|
|
4. , . , .
, . , , .
. . - . .
.
, .