9231 P13 - Nov 2012 - Q2 - 4 marks
6511
Find the set of values of \(a\) for which the system of equations
\(\begin{aligned} a x+y+2 z & =0 \\ 3 x-2 y & =4 \\ 3 x-4 y-6 a z & =14 \end{aligned}\)
has a unique solution.
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