Given the system of linear equations: 2x1 - 4x2 - 5x3 = 3 3x1 + 13x2 + 2x3 = 14 -x1 + 5x2 + 4x3 = 0 (a) Write the system in matrix form as Ax = B and compute the determinant detA = ? (b) Write down the augmented matrix of the system. (c) By using Gaussian Elimination Method, find the solution set of the system. Does the system have a unique solution or have an infinite number of solutions? Explain.
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The system in matrix form is: \[ A = \begin{pmatrix} 2 & -4 & -5 \\ 3 & 13 & 2 \\ -1 & 5 & 4 \end{pmatrix}, \quad B = \begin{pmatrix} 3 \\ 14 \\ 0 \end{pmatrix} \] The determinant of matrix A is: \[ \text{det}(A) = \begin{vmatrix} 2 & -4 & -5 \\ 3 & 13 & 2 \\ -1 Show more…
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