3. For the set of simultaneous equations: a. Form the augmented coefficient matrix b. Solve the equation by Gaussian elimination x1 + 2x2 + 3x3 = 5 - 3x1 x2 + 2x3 = 8 4x16x24x3 = -2 2 2 -2\ If A. x = x, where A = 1 3 1 2 1 determine the eigenvalues of the matrix A 2 and an eigenvector corresponding to each eigenvalue.

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