A) \[a\ne 1\]
B) \[a=1\]
C) \[a=0\]
D) \[a=-1\]
E) none of these
Correct Answer: B
Solution :
If matrix A is singular, then\[|A|=0\] \[\therefore \] \[\left| \begin{matrix} a & 2 \\ 2 & 4 \\ \end{matrix} \right|=0\] \[\Rightarrow \] \[4a-4=0\] \[\Rightarrow \] \[a=1\]You need to login to perform this action.
You will be redirected in
3 sec