.
y i = f(x i),
.. yi xi. xi , yi ().
.
.
, .
, .
, .
, .
(N) (. 5.1).
. 5.1.
, , .. .
, .
, , yi = f(x i), yi = f(yi - 1).
, , :
( );
( , );
( , ).
, .
.
:
yi = f (xi) ( ) x xi x (1 i N) x i = j (x i - 1), (ij = j (ij 1)).
(N) () .
() (. 5.2):
. 5.2.
.
. 5.1.
5.1
x | y |
... | ... |
xi | yi |
... | ... |
xn | yn |
.
()
|
|
yi = f(xi),
.
x i = j (x i - 1).
, :
x i = x i - 1 + Dx.
xi (x) (x) . xi x, x Dx.
x<x Dx x xi x.
x>x Dx x xi x.
xi yi . 5.3. .
Y Y
x xi x x xi x
y y
Dx Dx
yi yi
y y
Dx Dx
x xi x X x xi x X
. 5.3
:
xi=x ( );
( ) xi x Dx (xi x Dx), .
yi = f (xi) xi = xi-1 + Dx, .
, N = ] (x - x ) / Dx [ + 1. .
(5.1) .
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