6
. MathCAD.
,
() , - :
(1)
(1) , , =.
n ( xi), m / .
, , .
, :
1) ();
2) ().
, .
, (m ³ n+1).
2.1.
2.1
:
1. f(x), -f(x).
2. , ..
3. . :
a1x1 +a2x2 +...+anxn £ b
xn+1 ³ 0,
a1x1 + a2x2 +...+ anxn + xn+1 = b
, ,,
a1x1 +a2x2 +...+anxn ³ b,
a1x1 + a2x2 +...+ anxn - xn+1 = b
, , x.
4. . m n (m<n) m , .. (n-m) . , , m .
, .
, .
, f(x) (),
|
|
m , , , , .
(n-m) .
m m (n-m) .
, , .
, , - .
. (m ) . :
(2)
(m ), , .
, , , ( ).
, , .
.
:
n=4, m=2.
.
: x1x2, x1x3, x1x4, x2x3, x2x4, x3x4.
2.2 ,
2.2
x1x2 | - | |||
x1x3 | 0.5 | |||
x1x4 | - | |||
x2x3 | 0.25 | |||
x2x4 | - | |||
x3x4 |
.
6.
, :
2.1 MathCAD, . .
2.1 MathCAD