Ononot — Consider the matrix A = \begin{pmatrix} 1 & 2 \\ 0 & 3 \end{

Eigenvalues & Eigenvectorsmedium

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Consider the matrix $A = \begin{pmatrix} 1 & 2 \\ 0 & 3 \end{pmatrix}$ . Does there exist a diagonal matrix $D$ and an invertible matrix $P$ such that $A = PDP^{-1}$ ?