Question: 3. Consider the system of linear equations X2 + 2x3 X4 -1 X1 X2 X3 - -x1 X2 + X3 + 3.x4 1 X

3. Consider the system of linear equations X2 + 2x3 X4 -1

3. Consider the system of linear equations X2 + 2x3 X4 -1 X1 X2 X3 - -x1 X2 + X3 + 3.x4 1 X + 2x2 X4 9. Use Matlab to find the LU decomposition of the coefficient matrix A and then solve the resulting triangular system using forward and backward substitutions programs. (You need to provide the codes)

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