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3 and 4 .Determinants and Matrices
normal
જો $A = \left[ {\begin{array}{*{20}{c}}1&1\\0&1\end{array}} \right],$$B = \left[ {\begin{array}{*{20}{c}}0&1\\1&0\end{array}} \right],$ તો $AB = $
A
$\left[ {\begin{array}{*{20}{c}}0&0\\0&0\end{array}} \right]$
B
$\left[ {\begin{array}{*{20}{c}}1&1\\1&0\end{array}} \right]$
C
$\left[ {\begin{array}{*{20}{c}}1&0\\0&1\end{array}} \right]$
D
$\left[ {\begin{array}{*{20}{c}}1&0\\0&1\end{array}} \right]$
Solution
(b)$A = \left[ {\begin{array}{*{20}{c}}1&1\\0&1\end{array}} \right],B = \left[ {\begin{array}{*{20}{c}}0&1\\1&0\end{array}} \right] \Rightarrow AB = \left[ {\begin{array}{*{20}{c}}1&1\\1&0\end{array}} \right]$.
Standard 12
Mathematics