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Determinant of Order 2 x 2 matrix

April 27, 2018

Example : Let $A=\begin{bmatrix} a_{11} &a_{12} \\ a_{21} & a_{22} \end{bmatrix}$ , Find det A or |A| ?

Sol. : $detA=|A|=\begin{vmatrix} a_{11} &a_{12} \\ a_{21} & a_{22} \end{vmatrix}=a_{11}a_{22}-a_{21}a_{12}$

determinant determinant of order 2

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Determinant of Order 2 x 2 matrix

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