, , n c n , :
det A = D ¹ 0.
n c n (1).
- (, ).
:
; ;
;...; .
D , ,..., n - .
det A = D ¹ 0, , , , :
. (4)
. :
. 1) det A = D = = 10.
2) :
D = = 2 + 24 24 + 6 = 8; D = =
= - 6 + 24 24 +2 = - 4; D z = = 2 + 6 + 2 6 = 4.
3) (4):
: |
, , n c n , : det A = D ¹ 0. n c n (1). - (, ). : ; ; ;...; . D , ,..., n - . det A = D ¹ 0, , , , : . (4) . : . 1) det A = D = = 10. 2) : D = = 2 + 24 24 + 6 = 8; D = = = - 6 + 24 24 +2 = - 4; D z = = 2 + 6 + 2 6 = 4. 3) (4):
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