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11TH · MATH

Question 6

menu_bookSolutionmenu_bookTheorymenu_book•(i)A=[−32−1213]A=\begin{bmatrix}-3&2&-1\\2&1&3\end{bmatrix}A=[−32​21​−13​]menu_book•(ii)A=[312213]A=\begin{bmatrix}3&1\\2&2\\1&3\end{bmatrix}A=​321​123​​
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11TH · MATH

Question 6

menu_bookSolutionmenu_bookTheorymenu_book•(i)A=[−32−1213]A=\begin{bmatrix}-3&2&-1\\2&1&3\end{bmatrix}A=[−32​21​−13​]menu_book•(ii)A=[312213]A=\begin{bmatrix}3&1\\2&2\\1&3\end{bmatrix}A=​321​123​​
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Accedmychevron_right11thchevron_rightmathchevron_rightMatrices And Determinantschevron_rightExercise 4.2

(i)

∣AAT∣=147,∣ATA∣=0\boxed{|AA^T|=147,\quad |A^TA|=0}∣AAT∣=147,∣ATA∣=0​
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(ii)
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