6.
:
(6.1)
. :
, (6.2)
(6.1) :
(6.3)
, (6.3) :
(6.4)
:
1. (6.4) ?
2. (6.1)?
. ((6.2)). , (6.4) , , , .
,
(6.5)
:
(6.6)
(6.4) .
, ‑ :
(6.7)
(6.4) -.
, , (6.3) (6.4):
(6.8)
(6.9)
, - .
, , . [5.1], , :
. (6.10)
, - , , 1.
, , .
. .
, 1950. [5.2] , , , .
. , , , - . , x [5.1].
. ( .6.1).
, :
(6.11)
. (6.11).
x |
f |
x |
) |
) |
.6.1 |
.6.1 , , , , , . , (6.11)
|
|
, (6.12)
‑ , 1.
. , (6.4), [6.3]:
(6.13)
(6.14)
, ? . , , , 1, 2. (6.13) -. (6.10).
. .
6.1. . . .: , 1980. 454.
6.2. Young D.M. Iterative Methods for Solving Partial Difference Equations of Elliptic Type. Doctoral thesis. Harvard University, 1950.
6.3. ., . . .: , 1999. 548 .