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Use Gaussian elimination to find the values of a for which the equation systemx + y = 2z = a +73x - y + az

Use Gaussian elimination to find the values of a for which the equation systemx + y = 2z = a +73x - y + az = -3-x + ay - 4z = 8has (i) exactly solution; (ii) more than one solution; (iii) no solution.

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