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Let \(\mathbf{A} = {\begin{pmatrix} \sqrt{3}/2& -1/2\\ 1/2 & \sqrt{3}/2 \end{pmatrix}}\) Then what is \(\mathbf{A}^{2018} \begin{pmatrix} 2 \\ 2 \end{pmatrix}\)?

 Aug 7, 2020
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As follows:

 

 Aug 7, 2020

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