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Question: problem 7 use gaussian elimination to find a row...

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Problem #7 : Use Gaussian elimination to find a row echelon form (not reduced row echelon form) of the augmented matrix for the following system, and then use it to determine for which value of a the following system has infinitely many solutions x-2y + 4z = x+4y + z=-11 2x-3y + az = 0

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