Question
Let $L$ be the linear transformation represented by the matrix $\left(\begin{array}{rr}0 & 1 \\ -1 & 0\end{array}\right)$. Show that $L^2=L \circ L$ is rotation by $180^{\circ}$. Is $L$ itself a rotation or a reflection?
Step 1
We need to find the matrix of the transformation $L^2 = L \circ L$, which is the matrix product $A^2 = A \cdot A$. Show more…
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