Determinantni hisoblang

determinantni hisoblang.
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#-2
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2
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22
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3
++++
determinantni hisoblang.
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#18
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20
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12
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7
++++

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chiziqli tenglamalar sistemasini yechimlarini toping.

A= kvadrat matritsani detrminantini hisoblang

K= matritsa berilgan bo’lsa, 2K matritsani toping?