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| -rw-r--r-- | vorlesungen/slides/hermite/hermiteentwicklung.tex | 69 |
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diff --git a/vorlesungen/slides/hermite/hermiteentwicklung.tex b/vorlesungen/slides/hermite/hermiteentwicklung.tex new file mode 100644 index 0000000..e1ced30 --- /dev/null +++ b/vorlesungen/slides/hermite/hermiteentwicklung.tex @@ -0,0 +1,69 @@ +% +% hermiteentwicklung.tex -- slide template +% +% (c) 2021 Prof Dr Andreas Müller, OST Ostschweizer Fachhochschule +% +\bgroup +\begin{frame}[t] +\setlength{\abovedisplayskip}{5pt} +\setlength{\belowdisplayskip}{5pt} +\frametitle{Beliebige Polynome} +\vspace{-20pt} +\begin{columns}[t,onlytextwidth] +\begin{column}{0.48\textwidth} +\begin{block}{Polynom} +\[ +P(x) += +p_0 + p_1x + p_2x^2 + \dots + p_nx^n +\] +als Linearkombination von Hermite-Polynome schreiben: +\begin{align*} +P(x) +&= +a_0H_0(x)% + a_1H_1(x) ++ \dots + a_nH_n(x) +\\ +&= +a_0\cdot 1 +\\ +&\quad + a_1\cdot 2x +\\ +&\quad + a_2\cdot(4x^2-2) +\\ +&\quad + a_3\cdot(8x^3-12x) +\\ +&\quad + a_4\cdot(16x^4-48x^2+12) +\\ +&\quad\;\;\vdots +\\ +&\quad + a_n(2^nx^n + \dots) +\end{align*} +\end{block} +\end{column} +\begin{column}{0.48\textwidth} +\begin{block}{Koeffizientenvergleich} +führt auf ein Gleichungssystem +\begin{center} +\begin{tabular}{|>{$}r<{$}>{$}r<{$}>{$}r<{$}>{$}r<{$}>{$}r<{$}>{$}c<{$}|>{$}c<{$}|} +\hline +a_0&a_1&a_2&a_3&a_4&\dots&\\ +\hline + 1& 0& 0& 0& 0&\dots&p_0\\ + 0& 2& 0& 0& 0&\dots&p_1\\ +-2& 0& 4& 0& 0&\dots&p_2\\ + 0&-12& 0& 8& 0&\dots&p_3\\ +12& 0&-48& 0& 16&\dots&p_4\\ +\vdots&\vdots&\vdots&\vdots&\vdots&\ddots&\vdots\\ +\hline +\end{tabular} +\end{center} +Dreiecksmatrix, Diagonalelement +$\ne 0$ +$\Rightarrow$ +$\exists$ eindeutige Lösung +\end{block} +\end{column} +\end{columns} +\end{frame} +\egroup |