h0 r0 V = 30 3, , S ( ).
1. . h r:
, .
h r V , :
.
2. , . , r, S(r). r0, : . , S(r) r r0 ., , r0 S(r) . h0 = 2r0. r0 h0 V, .
3. . ,
.
. 50 , 70 , 40 , 80 .
aij 1 i - j - (i,j = 1,2). 11 = 1,2 ., 12 = 1,6 ., 21 = 0,8 ., 22 = 1 .
, ?
1. . . 11 12 , , 21 22 . :
: f = 1,2x11 + 1,6x12 +0,8x21 + x22.
, 11, 12, 21 22, f.
2. , . (1) ij (i,j = 1, 2) ( ). ,
22 . (i,j = 1,2), (2) , . (2) 11, 12, 21 f, f = 148 0,222.
, k = -0,2 < 0. , [30; 70]. , () 22 = 70. (2): 11 = 40, 12 = 10, 21 = 0.
3. . , 40 , 10 , .
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