F(x)->min (1)
.
G(x)<=0, i=1,k (2)
G(x)=0, i=k+1,m (3) x (4)
, *=(x1,x2,x3,xn), (2,4).
:
1) (1,3)
2)
3) , n , .
, .
(, , , ..), .
Y=(y1,y2,,yn)
Yj [yjmin, yjmax], j=1,n
Yj<->xj; xj= yj-jmin /ymax-ymin
J=1,n; xj [0,1]
(1,3) .
.
n- , .
f(x1,x2)=x12+x22->mm
: 12 , . , ( ).
f(x) f(x)=const.
, f(x). const .
f(x) , f(x) gi(x) .
, . .
n- , , .
, f(x) .
. , .
|
|
f(x) .
f(x) , f(x)
F(x)=> f(x)
, f(x) .
f(x).
,
:
min max, ()
f(xyz)=x2+y2-z2-xy+x-2z
f(xyz) .
.
NQ .
df(xyz)/2x=2x+0-0-1y+1-0=2x-y+1=0
df(xyz)/2y=0+2y-0-x+0-0=2y-x=0
df(xyz)/2z=0+0-2z-0+0-z=-2z-z
3 . 3 .
2x-y+1=0
2y-x=0
-2z-z=0
2 .
11 12 13
21 22 23
31 32 33
f(x), x [a, b]
f(x)->min
E>0
N=|b-a/E|+1