A) 2
B) - 1
C) 1
D) 0
Correct Answer: A
Solution :
\[\left. \begin{align} & x+8y+7z=0 \\ & 9x+2y+3z=0 \\ & x+y+z=0 \\ \end{align} \right\}\begin{matrix} 7y+6z=0 \\ \begin{align} & \\ & 7x+z=0 \\ \end{align} \\ \end{matrix}\] \[x=\lambda \,\,\,\,\,\,\,\,\left| y=\frac{-6(-7\lambda )}{7}\, \right|=7=-7gl\] \[\,\,\,\,\,\,\,\,\,\,\,\] \[\lambda +12\lambda -7\lambda =6\,\]\[2\lambda +6\lambda -7\lambda \] \[6\lambda =6\] \[=2\lambda \] \[\] \[=\]You need to login to perform this action.
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