Answer by Emilio Novati for Find the matrix of linear transformation (in...
The product of two matrices is not commutative. If you want the matrix that represents first the rotation than the reflection, the correct order is $R'\cdot R$.
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Find the matrix of linear transformation (in Standard basis) that rotates clockwise every vector in $ \mathbb{R}^{2}$ through an angle $ \pi/4 $ and then reflects it across y axis. $$ $$ The standard...
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