1549301742-The_Theory_of_Difference_Schemes__Samarskii

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The Dirichlet difference problem for Poisson's equation 253


2

1

h l (^0) h1
h2
4
a)
a) A; y = !: ( Y1 - Yo
h1 h1
b) Aj y = !: ( Y1 - Yo
h1 h;
c) A
(^1) y - !: h ( Y1 h - Yo
l 1 +
A
= A;+ A;.
c)
h l+
3
h1
2
h2
1
0 h
l
h2
4
b)
Figure 13.
Yo - Y3)
I ' A2 Y = Yx^2 x^2 ' A= Aj + A2.
], l
Yo - Y3) A 'lJ = 'lJ- A*= Aj + A2.
h l '^2 ~ ~ X2X2 l
Yo - Y3)
l '1- '
A
!: (!h -Yo
(^2) y - l h*
'2 2
Yo - Y4)
h 2 '

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