Question: Solve the linear system (mathbf{A x}=mathbf{b}) by using a. The inverse of the coefficient matrix. b. 1 The operator in MATLAB. (mathbf{A}=left[begin{array}{ccc}a-1 & 2

Solve the linear system \(\mathbf{A x}=\mathbf{b}\) by using

a. The inverse of the coefficient matrix.

b. 1 The "\" operator in MATLAB.

\(\mathbf{A}=\left[\begin{array}{ccc}a-1 & 2 a+1 & -1 \\ 1 & -2 a & -1 \\ -1 & 2 a+1 & 3 a+1\end{array}\right], \quad \mathbf{b}=\left\{\begin{array}{c}5 a \\ -4 a \\ 7 a+2\end{array}\right\}, a=\) parameter

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