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Transformationshard
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A transformation is defined by the matrix M=(cos⁡θ−sin⁡θsin⁡θcos⁡θ)(k00k)M = \begin{pmatrix} \cos \theta & -\sin \theta \\ \sin \theta & \cos \theta \end{pmatrix} \begin{pmatrix} k & 0 \\ 0 & k \end{pmatrix}M=(cosθsinθ​−sinθcosθ​)(k0​0k​). What is the geometric interpretation?