.
:
(12.10) |
:
(12.11) |
(12.12) |
(12.11) , .
y1=y',
y'1=y".
(12.11) , :
(12.12) :
(12.13) |
y(x) y1(x),
, .
(12.14) |
:
[a, b] h.
(12.14) :
..
i | x | y | y1 |
0 | x0 | y0 | (y1)0 |
1 | x1 | y1 | (y1)1 |
2 | x2 | y2 | (y1)2 |
3 | x3 | y3 | (y1)3 |
... | ... | ... | ... |
n | xn | yn | (y1)n |
h - ,
a=x0 - ,
b=xn - ,
n=(b-a)/h - .
, , (. 12.15).
, .. xi (xi, yi), (xi, (y1)i).
. 12.15.
, . : , . . 1, 2, 3,:, n .
(12.14) PRAV.
(12.13). PRAV :
(12.13) 12.16.
. 12.16. (12.6)
h - ,
b - ,
n - ,
x, y, y1 - , - .
m- - (4- )
, m-
(12.15) |
, m 1-
(12.6) |
(12.9), m- (12.8) m
|
|
.. y(x) , (m-1)- .
[a, b] h n . , (12.8) (12.9) , (. 12.8)
12.1.