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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