Solved: By examining the determinant of the matrix of coefficients, decide whether or
Chapter 3, Problem 14(choose chapter or problem)
By examining the determinant of the matrix of coefficients, decide whether or not the following systems of equations have a unique solution. (a) 3x1 + 2x2 + x3 = 4 x1 -3x2 + 2x3 = -11 2x1 + x2 -3x3 = -5 (b) 2x1 + 7x2 + x3 = 8 -x1 -5x2 3 X1 + 2X2 + X3 = -4 (c) 5x1 + 6x2 + 4x3 = 3 7x1 + 8x2 + 6x3 = 1 6x1 + 7x2 + 5x3 = 0
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