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det(\left(\begin{matrix}3&-1&2\\-1&6&0\\4&5&-2\end{matrix}\right))
Kimihia te tau whakatau o te poukapa mā te whakamahi i te tikanga hauroki.
\left(\begin{matrix}3&-1&2&3&-1\\-1&6&0&-1&6\\4&5&-2&4&5\end{matrix}\right)
Whakaroatia te poukapa taketake mā te tāruarua i ngā tīwae tuatahi e rua hei tīwae tuawhā me te tuarima.
3\times 6\left(-2\right)+2\left(-1\right)\times 5=-46
Tīmata atu i te tāurunga mauī o runga, whakareatia whakararo i ngā hauroki, ka tāpiri i ngā hua ka puta.
4\times 6\times 2-2\left(-1\right)\left(-1\right)=46
Tīmata atu i te tāurunga mauī o raro, whakareatia whakarunga i ngā hauroki, ka tāpiri i ngā hua ka puta.
-46-46
Tangohia te tapeke o ngā hauroki whakarunga mai i te tapeke o ngā hua hauroki whakararo.
-92
Tango 46 mai i -46.
det(\left(\begin{matrix}3&-1&2\\-1&6&0\\4&5&-2\end{matrix}\right))
Kimihia te tau whakatau o te poukapa mā te whakamahi i te tikanga whakaroha ā-tauriki (te tikanga whakaroha ā-tauwehe tahi rānei).
3det(\left(\begin{matrix}6&0\\5&-2\end{matrix}\right))-\left(-det(\left(\begin{matrix}-1&0\\4&-2\end{matrix}\right))\right)+2det(\left(\begin{matrix}-1&6\\4&5\end{matrix}\right))
Hei whakaroha mā ngā tauriki, me whakarea ia huānga o te haupae tuatahi ki tana tauriki, arā, ko te tau whakatau o te poukapa 2\times 2 i hangā mā te muku i te haupae me te tīwae i roto anō taua huānga, kātahi ka whakarea ki te tohu tūnga o taua huānga.
3\times 6\left(-2\right)-\left(-\left(-1\right)\left(-2\right)\right)+2\left(-5-4\times 6\right)
Mō te poukapa 2\times 2 \left(\begin{matrix}a&b\\c&d\end{matrix}\right), ko te ad-bc te tau whakatau.
3\left(-12\right)-\left(-2\right)+2\left(-29\right)
Whakarūnātia.
-92
Tāpirihia ngā kīanga tau hei kimi i te otinga whakamutunga.