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}2 & 1

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

a. The inverse of the coefficient matrix.

b. 1 The "\" operator in MATLAB.

$\mathbf{A}=\left[\begin{array}{ccc}2 & 1 & -2 \\ 3 & 0 & 2 \\ -1 & 2 & -1\end{array}\right], \mathbf{b}=\left\{\begin{array}{c}4 a \\ a \\ 0\end{array}\right\}, a=$ parameter

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