: .
- (), (), (, , ..), ( ). , , , .
, ( ). , , , , , . .
. , .
( ), . , , : ( y) ( x), .
, .
, , :
(, x) , , , ;
(, y) , , ;
, , . : yt , yt-1, yt-2 ;
, , . (xt-1) (xt) , (yt-1).
() .
. , , .
, .
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. , - , . , () . .
, . , .
. , . .
. .
, .
() X Y , ..
. (1.1)
.
1. - .
. X Y , .
. X Y.
2. .
3. , () X
4. , a = const.
5. , a = const.
6. , .
7. .
. X Y , .
1.1. , .
. (1.1) :
, . .
, , , X Y , ( ). , n .
X Y , ..
= = . (1.2)
.
1. = = ,
, .
2. = .
3. = , X.
4. = 0, a = const.
5. = a , a = const.
6. = .
7. () , :
= .
7 , , .
1.2. , = .
. (1.2) :
= = = = = , .