(Solved) Let T: R^3 \rightarrow R^3 be the linear transformation given by multiplication by


Question: Let \(T: \mathbb{R}^{3} \rightarrow \mathbb{R}^{3}\) be the linear transformation given by multiplication by

\[A=\left(\begin{array}{ccc} 3 & 1 & -1 \\ -4 & -2 & -4 \\ -5 & -5 & -1 \end{array}\right)\]

Note that 2 is an eigenvalue of this matrix, so that \(\lambda-2\) is a factor of the characteristic polynomial of \(A\). Find a basis \(\mathcal{B}\) for \(\mathbb{R}^{3}\) for which the matrix of \(T\) with respect to \(\mathcal{B}\) is diagonal.

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