4.4 Übungen -3d)
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4-4.tex
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4-4.tex
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@ -121,9 +121,33 @@ wobei alle Koeffizienten (ohne die Konstanten) und denn Pivots Null sind.
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\item Wahr
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\end{enumerate}
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\section*{Üben und Anwenden 4.4}
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\subsection*{Aufgabe 1}
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$\left(\begin{matrix}
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2&-1&7&11&1\\
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-1&2&-4&5&11\\
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-3&-5&1&4&-8\\
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1&-2&-3&4&-2
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\end{matrix}\right)$
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\subsection*{Aufgabe 2}
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\begin{tabular}{r|r@{$~=~$}l}
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I &$x_1+x_2$&$5$\\
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II &$x_2+x_3$&$4$\\
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III &$x_3+x_4$&$3$\\
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IV &$x_4+x_5$&$2$\\
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V &$x_2+x_4$&$1$
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\end{tabular}
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\subsection*{Aufgabe 3}
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\begin{enumerate}[label=\alph*)]
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\item[b)]
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\item
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-2I zu I add
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$\left(\begin{matrix}
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2&-3&9\\
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0&5&-10
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\end{matrix}\right)
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\Rightarrow \mathbb{L}=\{(\frac{3}{2},-2)\}
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$
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\item
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$\left(\begin{matrix}
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2&-1&1&1\\
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-2&-4&6&4\\
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@ -144,5 +168,66 @@ $\left(\begin{matrix}
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0&0&0&6
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\end{matrix}\right)$\\
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III: $0=6 \Rightarrow \mathbb{L}=\{\}$
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\item \begin{tabular}{c}
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I/2\\
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-I/2 zu II add\\
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2I zu III add
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\end{tabular}
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$\left(\begin{matrix}
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1&-1&0&2\\
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0&2&-5&-3\\
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0&-4&3&15
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\end{matrix}\right)$
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2II zu III add
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$\left(\begin{matrix}
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1&-1&0&2\\
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0&2&-5&-3\\
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0&0&-7&9
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\end{matrix}\right)\Rightarrow\mathbb{L}=\{(-\frac{19}{7},-\frac{33}{7},\frac{-9}{7})\}$
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\item %d
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normalisieren
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$\left(\begin{matrix}
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1&0&1&3\\
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0&1&1&-1\\
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1&1&1&0\\
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-3&1&-1&-8
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\end{matrix}\right)$
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\begin{tabular}{c}
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-I zu III add\\
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3I zu IV add
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\end{tabular}
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$\left(\begin{matrix}
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1&0&1&3\\
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0&1&1&-1\\
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0&1&0&-3\\
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0&1&2&-2
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\end{matrix}\right)$
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Tausche II und III
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$\left(\begin{matrix}
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1&0&1&3\\
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0&1&0&-3\\
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0&1&1&-1\\
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0&1&2&-2
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\end{matrix}\right)$
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\begin{tabular}{c}
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-II zu III add\\
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-II zu IV add
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\end{tabular}
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$\left(\begin{matrix}
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1&0&1&3\\
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0&1&0&-3\\
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0&0&1&2\\
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0&0&2&1
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\end{matrix}\right)$
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-2III zu IV add
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$\left(\begin{matrix}
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1&0&1&3\\
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0&1&0&-3\\
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0&0&1&2\\
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0&0&0&-3
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\end{matrix}\right)$
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IV: $0=-3\Rightarrow\mathbb{L}=\{\}$
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\end{enumerate}
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\end{document}
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