The values of a and b for which the system ⎡⎢⎣3−215−8921a⎤ – InterviewSolution

1.	The values of a and b for which the system ⎡⎢⎣3−215−8921a⎤⎥⎦⎡⎢⎣xyz⎤⎥⎦=⎡⎢⎣b3−1⎤⎥⎦has infinitely many solutions
Answer» The values of $a$ and $b$ for which the system $⎡ ⎢ ⎣ \begin{matrix} 3 & - 2 & 1 5 & - 8 & 9 2 & 1 & a \end{matrix} ⎤ ⎥ ⎦ ⎡ ⎢ ⎣ \begin{matrix} x y z \end{matrix} ⎤ ⎥ ⎦ = ⎡ ⎢ ⎣ \begin{matrix} b 3 - 1 \end{matrix} ⎤ ⎥ ⎦$ has infinitely many solutions

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