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4. Consider the following linear system: 10x1 + 3x2 - 19x3 = -11, 3.x1 + X2 - 6X3 -3, -3x1 - 2.12 + 913 =

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4. Consider the following linear system: 10x1 + 3x2 - 19x3 = -11, 3.x1 + X2 - 6X3 -3, -3x1 - 2.12 + 913 = 0, in variables x1, 72, and x3. Write the general solution in parametric form. (a) What is the RREF of the augmented matrix? (b) What is the rank of the augmented matrix? (c) Give the solution to the system in parametric form

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