Ononot — For the matrix A = \begin{pmatrix} 3 & 0 \\ 0 & 1 \end{pmatr

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Eigenvalues & Eigenvectorseasy

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For the matrix $A = \begin{pmatrix} 3 & 0 \\ 0 & 1 \end{pmatrix}$ , find a left eigenvector for eigenvalue $\lambda = 3$ (i.e., a row vector $\mathbf{w}^T$ such that $\mathbf{w}^T A = 3\mathbf{w}^T$ ).