.
x(i), y(i), i =1,2 n; xk |
yk (2) |
xk, yk |
x(n), y(n) ;
xk , yk.
3.3.2. .
. . x (i=1, 2, 3.n) [a;b] y(i). i - , (xi-1, yi-1) (xi, yi):
(y-yi-1) / (yi-yi-1) = (x-xi-1) / (xi-xi-1)
y = yi-1 + (yi-yi-2) * (x-xi-1) / (xi-xi-1)
y . [a;b] , . . i.
.
x(i), y(i), i =1,2 n; xk |
i =1 |
i = i +1 |
, xk < x(i) |
yk (3) |
xk, yk |
x(n), y(n) ;
xk , yk.
, .
.
. 4 , , , , , .. . , .
n - ;
a, b ;
x (n), y (n) - ;
xk - , ;
yk xk;
nn, nk 1- .
a, b, n, xk, x(i), y(i) i =1, 2, n |
k =1 |
k = k +1 |
, xk < x(k) |
<=2, nn =1; nk =4 |
2< k <= n -1, nn = k -2; nk = k +1 |
k = n, nn = n -3; nk = n |
yk=LAGR(nn,nk,xk,x,y) |
xk, yk |
:
. . , , .
EXCEL, ALT F11 . c Visual Basic.
Visual Basic :
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EXCEL, (k).
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EXCEL.
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EXCEL.
1. :
x | -5 | -4 | -3 | -2 | -1 | ||||||
y | -2,17 | -2,96 | -5,29 | 20,00 | 1,11 | 0,00 | 0,91 | 2,22 | 2,43 | 2,16 | 1,85 |
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6. EXCEL:
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Visual Basic . . , .
1. , . . / . . , . . , . . . - .: , 1987. - 597 .
2. , . . / . . . - .: , 1959. - 239 .
3. , . . / . . , . . . .: , 1990. 207 .
4. , . . : / . . . .: , 2007. - 100 .
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5. , . . / . . . - .: , 1978. - 318 .
6. , . . / . .. . - .: , 1968. - 400 .