જો $A = \left( {\begin{array}{*{20}{c}}1&{ - 1}&1\\2&1&{ - 3}\\1&1&1\end{array}} \right)$ અને $(10)B = \left( {\begin{array}{*{20}{c}}4&2&2\\{ - 5}&0&\alpha \\1&{ - 2}&3\end{array}} \right)$. જો $ B$ એ $A $ નો વ્યસ્ત શ્રેણિક હોય , તો $\alpha $ મેળવો.
AIEEE 2004, Medium
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