3 and 4 .Determinants and Matrices
medium

જો  $\left| \begin{gathered}
   - 6\ \ \,\,1\ \ \,\,\lambda \ \  \hfill \\
  \,0\ \ \,\,\,\,3\ \ \,\,7\ \  \hfill \\
   - 1\ \ \,\,0\ \ \,\,5\ \  \hfill \\ 
\end{gathered}  \right| = 5948 $, તો $\lambda $  મેળવો.

A

$2011$

B

$2013$

C

$2015$

D

$2017$

Solution

$\left|\begin{array}{ccc}{-6} & {1} & {\lambda} \\ {0} & {3} & {7} \\ {-1} & {0} & {5}\end{array}\right|=5948$

on expansion $\Rightarrow \lambda=2015$

Standard 12
Mathematics

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