A) 3
B) 4
C) 5
D) 6
Correct Answer: A
Solution :
\[\left| \begin{matrix} 1 & 2 & 3 \\ \lambda & 4 & 7 \\ -3 & -2 & -5 \\ \end{matrix} \right|\,=0\Rightarrow \lambda =3.\]You need to login to perform this action.
You will be redirected in
3 sec