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det(\left(\begin{matrix}-2&-1&5\\3&4&-2\\4&3&-2\end{matrix}\right))
Kimihia te tau whakatau o te poukapa mā te whakamahi i te tikanga hauroki.
\left(\begin{matrix}-2&-1&5&-2&-1\\3&4&-2&3&4\\4&3&-2&4&3\end{matrix}\right)
Whakaroatia te poukapa taketake mā te tāruarua i ngā tīwae tuatahi e rua hei tīwae tuawhā me te tuarima.
-2\times 4\left(-2\right)-\left(-2\times 4\right)+5\times 3\times 3=69
Tīmata atu i te tāurunga mauī o runga, whakareatia whakararo i ngā hauroki, ka tāpiri i ngā hua ka puta.
4\times 4\times 5+3\left(-2\right)\left(-2\right)-2\times 3\left(-1\right)=98
Tīmata atu i te tāurunga mauī o raro, whakareatia whakarunga i ngā hauroki, ka tāpiri i ngā hua ka puta.
69-98
Tangohia te tapeke o ngā hauroki whakarunga mai i te tapeke o ngā hua hauroki whakararo.
-29
Tango 98 mai i 69.
det(\left(\begin{matrix}-2&-1&5\\3&4&-2\\4&3&-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).
-2det(\left(\begin{matrix}4&-2\\3&-2\end{matrix}\right))-\left(-det(\left(\begin{matrix}3&-2\\4&-2\end{matrix}\right))\right)+5det(\left(\begin{matrix}3&4\\4&3\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.
-2\left(4\left(-2\right)-3\left(-2\right)\right)-\left(-\left(3\left(-2\right)-4\left(-2\right)\right)\right)+5\left(3\times 3-4\times 4\right)
Mō te poukapa 2\times 2 \left(\begin{matrix}a&b\\c&d\end{matrix}\right), ko te ad-bc te tau whakatau.
-2\left(-2\right)-\left(-2\right)+5\left(-7\right)
Whakarūnātia.
-29
Tāpirihia ngā kīanga tau hei kimi i te otinga whakamutunga.