A) 3
B) 2
C) 1
D) 4
Correct Answer: A
Solution :
\[\left| \begin{matrix} 1 & 2 & {{\lambda }^{2}} \\ 1 & {{\lambda }^{2}} & 2 \\ 2 & 0 & 4 \\ \end{matrix} \right|=0\] \[4{{\lambda }^{2}}-2(0)+{{\lambda }^{2}}-(-2{{\lambda }^{2}})=0\] \[2{{\lambda }^{2}}[2-{{\lambda }^{2}}]=0\] \[\lambda =0\,\,\] \[\lambda =\pm \sqrt{2}\]You need to login to perform this action.
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