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3 and 4 .Determinants and Matrices
normal
જો $A = \left( {\begin{array}{*{20}{c}}
2&{ - 1}\\
{ - 7}&4
\end{array}} \right)$ અને $B = \left( {\begin{array}{*{20}{c}}
4&1\\
7&2
\end{array}} \right)$ તો આપેલ પૈકી ક્યૂ સત્ય થાય.
A
$AA^T = I$
B
$(AB)^T = I$
C
$BB^T = I$
D
$AB \neq BA$
Solution
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Standard 12
Mathematics