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

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Eigenvalues & Eigenvectorsmedium

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For the matrix $A = \begin{pmatrix} 1 & 1 \\ 0 & 1 \end{pmatrix}$ , what is the algebraic multiplicity of $\lambda = 1$ ?