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Tráth na gCeist

Fadhbanna den chineál céanna ó Chuardach Gréasáin

https://socratic.org/questions/how-do-you-find-the-value-of-the-determinant-4-1-2-3

https://socratic.org/questions/how-do-you-find-the-determinant-of-2-3-2-1

https://socratic.org/questions/how-do-you-find-the-determinant-of-13-7-5-8

https://socratic.org/questions/how-do-you-find-the-determinant-of-6-5-0-8

https://socratic.org/questions/how-do-you-find-the-determinant-of-3-4-2-5

https://socratic.org/questions/how-do-you-find-the-determinant-of-9-12-12-16

Roinn

Cóipeáladh go dtí an ghearrthaisce

det(\left(\begin{matrix}7&-8\\9&9\end{matrix}\right))

Faigh deitéarmanant na maitríse.

7\times 9-\left(-8\times 9\right)

Don mhaitrís 2\times 2 \left(\begin{matrix}a&b\\c&d\end{matrix}\right), is ionann an deitéarmanant agus ad-bc.

63-\left(-8\times 9\right)

Méadaigh 7 faoi 9.

63-\left(-72\right)

Méadaigh -8 faoi 9.

135

Dealaigh -72 ó 63.

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