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authorAndreas Müller <andreas.mueller@ost.ch>2021-04-11 10:30:05 +0200
committerAndreas Müller <andreas.mueller@ost.ch>2021-04-11 10:30:05 +0200
commit15881729aa3f1293d546a1692a02094ed3f24e2b (patch)
tree7a051091d6f507ad3ab28dbd227206ad1288f368 /vorlesungen/slides/7/drehung.tex
parentphasen (diff)
downloadSeminarMatrizen-15881729aa3f1293d546a1692a02094ed3f24e2b.tar.gz
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phases
Diffstat (limited to 'vorlesungen/slides/7/drehung.tex')
-rw-r--r--vorlesungen/slides/7/drehung.tex53
1 files changed, 36 insertions, 17 deletions
diff --git a/vorlesungen/slides/7/drehung.tex b/vorlesungen/slides/7/drehung.tex
index ae0dbe3..7744e99 100644
--- a/vorlesungen/slides/7/drehung.tex
+++ b/vorlesungen/slides/7/drehung.tex
@@ -13,12 +13,20 @@
\begin{columns}[t,onlytextwidth]
\begin{column}{0.38\textwidth}
\begin{block}{Drehung}
+{\color{blue}Längen}, {\color<2->{blue}Winkel},
+{\color<2->{darkgreen}Orientierung}
+erhalten
+\uncover<2->{
\[
\operatorname{SO}(2)
=
-\operatorname{SL}_2(\mathbb{R}) \cap \operatorname{O}(2)
-\]
+{\color{blue}\operatorname{O}(2)}
+\cap
+{\color{darkgreen}\operatorname{SL}_2(\mathbb{R})}
+\]}
+\vspace{-20pt}
\end{block}
+\uncover<3->{%
\begin{block}{Zusammensetzung}
Eine Drehung muss als Zusammensetzung geschrieben werden können:
\[
@@ -31,7 +39,9 @@ D_{\alpha}
=
DST
\]
-\end{block}
+\end{block}}
+\vspace{-10pt}
+\uncover<12->{%
\begin{block}{Beispiel}
\vspace{-12pt}
\[
@@ -43,9 +53,10 @@ D_{60^\circ}
\begin{pmatrix}1&0\\\frac{\sqrt{3}}2&1\end{pmatrix}
}
\]
-\end{block}
+\end{block}}
\end{column}
\begin{column}{0.58\textwidth}
+\uncover<4->{%
\begin{block}{Ansatz}
\vspace{-12pt}
\begin{align*}
@@ -64,7 +75,7 @@ c^{-1}&0\\
t&1
\end{pmatrix}
\\
-&=
+&\uncover<5->{=
\begin{pmatrix}
c^{-1}&0\\
0 &c
@@ -73,40 +84,48 @@ c^{-1}&0\\
-st&-s\\
t& 1
\end{pmatrix}
+}
\\
-&=
+&\uncover<6->{=
\begin{pmatrix}
--stc^{-1}&{\color{darkgreen}sc^{-1}}\\
-{\color{blue}ct}&{\color{red}c}
-\end{pmatrix}
-=
+{\color<11->{orange}-stc^{-1}}&{\color<10->{darkgreen}sc^{-1}}\\
+{\color<9->{blue}ct}&{\color<8->{red}c}
+\end{pmatrix}}
+\uncover<7->{=
\begin{pmatrix}
-\cos\alpha & {\color{darkgreen}- \sin\alpha} \\
-{\color{blue}\sin\alpha} & \phantom{-} {\color{red}\cos\alpha}
-\end{pmatrix}
+{\color<11->{orange}\cos\alpha} & {\color<10->{darkgreen}- \sin\alpha} \\
+{\color<9->{blue}\sin\alpha} & \phantom{-} {\color<8->{red}\cos\alpha}
+\end{pmatrix}}
\end{align*}
-\end{block}
+\end{block}}
\vspace{-10pt}
+\uncover<7->{%
\begin{block}{Koeffizientenvergleich}
\vspace{-15pt}
\begin{align*}
+\uncover<8->{
{\color{red} c}
&=
-{\color{red}\cos\alpha }
+{\color{red}\cos\alpha }}
&&
&
+\uncover<9->{
{\color{blue}
-t}&=\rlap{$\displaystyle\frac{\sin\alpha}{c} = \tan\alpha$} \\
+t}&=\rlap{$\displaystyle\frac{\sin\alpha}{c} = \tan\alpha$}}\\
+\uncover<10->{
{\color{darkgreen}sc^{-1}}&={\color{darkgreen}-\sin\alpha}
&
&\Rightarrow&
{\color{darkgreen}s}&={\color{darkgreen}-\sin\alpha}\cos\alpha
+}
\\
+\uncover<11->{
{\color{orange} -stc^{-t}}
&=
\rlap{$\sin\alpha\tan\alpha = \cos\alpha \quad $}
+}
\end{align*}
-\end{block}
+\end{block}}
\end{column}
\end{columns}
\end{frame}