{ccc}{43}&{1}&{6}{35}&{7}&{4}{17}&{3}&{2} eching

$$\left| \begin{array} { c c c } { 43 } & { 1 } & { 6 } \\ { 35 } & { 7 } & { 4 } \\ { 17 } & { 3 } & { 2 } \end{array} \right|$$

Baholash

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Sarrus qoidasidan foydalanish qadamlari

Diagonal usulidan foydalanib matritsaning aniqlovchisini topish.

$$det(\left(\begin{matrix}43&1&6\\35&7&4\\17&3&2\end{matrix}\right))$$

Birinchi ikki ustunni to'rtinchi va beshinchi ustun sifatida qaytarish uchun asl matritsani kengaytirish.

$$\left(\begin{matrix}43&1&6&43&1\\35&7&4&35&7\\17&3&2&17&3\end{matrix}\right)$$

Pastki chap kiritmadan boshlab diagonal kamayish tarafga ko'paytirish ha koʻpaytmalarni qo'shish.

$$43\times 7\times 2+4\times 17+6\times 35\times 3=1300$$

Pastki chap kiritmadan boshlab diagonal ko'payish tarafga koʻpaytirish va koʻpaytmalarni qoʻshish.

$$17\times 7\times 6+3\times 4\times 43+2\times 35=1300$$

Kamayib boruvchi diagonal koʻpaytmalarning yig'indisidan ko'payib boruvchi diagonal koʻpaytmalar yig'indisini ayirish.

$$1300-1300$$

1300 dan 1300 ni ayirish.

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Ikkilamchilar bilan kengayishdan foydalanish qadamlari

Kichik a'zolarni kengaytirish usulidan foydalanib matritsaning aniqlovchisini topish (ko'paytiruvchilarni kengaytirish deb ham nomlanadi).

$$det(\left(\begin{matrix}43&1&6\\35&7&4\\17&3&2\end{matrix}\right))$$

Kichik a’zolarga kengaytirish uchun birinchi satrning har bir elementini o‘zining kichik a’zosiga ko‘paytiring, qaysiki ana shu elementga ega bo‘lgan satr va ustunni yo‘q qilish orqali yaratilgan 2\times 2 matritsasining maxraji hisoblanadi, so‘ngra elementning joylashuv belgisiga ko‘paytiring.

$$43det(\left(\begin{matrix}7&4\\3&2\end{matrix}\right))-det(\left(\begin{matrix}35&4\\17&2\end{matrix}\right))+6det(\left(\begin{matrix}35&7\\17&3\end{matrix}\right))$$

\left(\begin{matrix}a&b\\c&d\end{matrix}\right) 2\times 2 matritsasi uchun, determinant ad-bc.

$$43\left(7\times 2-3\times 4\right)-\left(35\times 2-17\times 4\right)+6\left(35\times 3-17\times 7\right)$$

Qisqartirish.

$$43\times 2-2+6\left(-14\right)$$

Yakuniy natija olish uchun shartlarni qo'shish.

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Omil

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