Ln n- f Ln (f: Ln ).
58. f: Ln , Ln.
= (1, 2,..., n) Ln, Ln, = 1 1 + 2 2 + + n n, 1, 2, , n . f () = a, f () = a11 + a22+ + ann.
, a11 + a22+ + ann.
, f: Ln .
Ln n- .
59. f: (Ln ´ Ln) ( ), Ln, , , a Î :
f ( + , ) = f (, ) + f (, ); f (, + ) = f (, ) + f (, ); f (a× ) = a× f ().
( , .)
Ln = (1, 2,..., n), = 1 1 + 2 2 + + n n,
= 1 1 + 2 2 + + n n, f (, ) = a. 58
f (, ) = f () = = , a .
, f (, ) = (55) .
= | . , : f (, ) = × × (56) |
1 = (11, 21,..., n1) Ln 1, = ×1, =×1. (56), f (, ) = (1) × × (1) = (1)×( × × )× 1. ,
1 = × × (57)
60. ,
f (, ) = f (, ) . (57)
, :
62. , .
63. n .
. (42)
(, ) = × × . , , (56), .
Ln n- f (, ).
61. f (, ) = , Ln (j () = f (, )). f (, ) j () .
|
|
Ln = (1, 2, , n) = 1 1 + 2 2 + + n n, , (55),
j () = (59)
.
j () = × × (60)
Ln , , Ln n . . . . , . , , Ln, , n. .
, 1 (56), .. 1 = × × , , , . , , . : Ln , .
62. j () = a1 12 + a2 22 + + an n2, , j () .
j () = 12 + 22 + + 2 +12 r2,
, . , = j () = 12 + 22 + + 2 + +12 +.+ r2.
64. ( ) .
. j () , Ln. Ln j () = × × . , 60 , 1 = 1× × , ( ). , 1, 1. 1 = , 1 1. , 1 .
. 8.3.
65. .
. 64 , . , , , r , (n r) .
|
|
1) , = (*).
(*) | , . j () = 12 + 22 + + r2. . 2) = R, .. j () , , , , . |
(**) | j () = a1 12 + a2 22 + + a 2 a+1 +12 ar r2 (**), j () = 12 + 22 + + 2 +12 r2. . |
.
j = 2 12 + 2 13 2 14 2 23 + 2 24 + 2 34.
.
= | . 8.3. l1 = l2 = l3 = 1, l4 = 3. 11 = 21 = , |
1 = | 31 = , 41 = (1, 1, 1, 1). 1. 1 . |
= | , j j = 12 + 22 + 32 3 42. |