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| rev | Bot | (Created page with "<div class="d-none"><math> \newcommand{\mathds}{\mathbb}</math></div> {{Alert-warning|This article was automatically generated from a tex file and may contain conversion errors. If permitted, you may login and edit this article to improve the conversion. }}Prove that the symmetry and projection with respect to the <math>Ox</math> axis rotated by an angle <math>t/2\in\mathbb R</math> are given by the matrices <math display="block"> S_t=\begin{pmatrix}\cos t&\sin t\\ \...") | Apr 22'25 at 22:37 | +690 |