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- \documentclass{article}
- \usepackage[russian]{babel}
- \usepackage[utf8x]{inputenc}
- \usepackage{amsmath}
- \usepackage{systeme}
- \usepackage{delarray}
- \usepackage{tikz}
- \usepackage{pgfplots}
- \DeclareMathOperator{\rk}{rk}
- \title{–Ш–Ф–Ч-3 –≤–∞—А–Є–∞–љ—В 9}
- \author{–Ф–µ–љ–Є—Б –Ъ–Њ–Ј–ї–Њ–≤}
- \begin{document}
- \maketitle
- \newpage
- \section*{–Ч–∞–і–∞—З–∞ 1}
- \begin{multline*}
- A =
- \begin{pmatrix}
- 12 & 14 & 18 & 17 & 4 \\
- 4 & 5 & 1 & 4 & 2 \\
- -14 & -18 & 4 & -9 & 2 \\
- 5 & 6 & 5 & 5 & -3 \\
- 1 & 1 & 4 & 2 & -1
- \end{pmatrix} \\
- \begin{pmatrix}
- 12 & 14 & 18 & 17 & 4 \\
- 4 & 5 & 1 & 4 & 2 \\
- -14 & -18 & 4 & -9 & 2 \\
- 5 & 6 & 5 & 5 & -3 \\
- 1 & 1 & 4 & 2 & -1
- \end{pmatrix} \rightarrow
- \begin{pmatrix}
- 1 & 1 & 4 & 2 & -1 \\
- 0 & 1 & -15 & -4 & 6 \\
- 0 & 1 & -15 & -5 & 2 \\
- 0 & 2 & -30 & -7 & 16 \\
- 0 & -4 & 60 & 19 & -12
- \end{pmatrix} \rightarrow
- \begin{pmatrix}
- 1 & 1 & 4 & 2 & -1 \\
- 0 & 1 & -15 & -4 & 6 \\
- 0 & 0 & 0 & -1 & -4 \\
- 0 & 0 & 0 & 1 & 4 \\
- 0 & 0 & 0 & 3 & 12 \\
- \end{pmatrix} \rightarrow \\
- \rightarrow \begin{pmatrix}
- 1 & 1 & 4 & 2 & -1 \\
- 0 & 1 & -15 & -4 & 6 \\
- 0 & 0 & 0 & 1 & 4 \\
- \end{pmatrix} \\
- \rk A = 3 \\
- \begin{pmatrix}
- 1 & 1 & 4 & 2 & -1 \\
- 0 & 1 & -15 & -4 & 6 \\
- 0 & 0 & 0 & 1 & 4 \\
- \end{pmatrix} \rightarrow
- \begin{pmatrix}
- 1 & 0 & 19 & 6 & -7 \\
- 0 & 1 & -15 & -4 & 6 \\
- 0 & 0 & 0 & 1 & 4 \\
- \end{pmatrix} \rightarrow \\
- \rightarrow \begin{pmatrix}
- 1 & 0 & 19 & 0 & -31 \\
- 0 & 1 & -15 & 0 & 22 \\
- 0 & 0 & 0 & 1 & 4 \\
- \end{pmatrix} \\
- B = \begin{pmatrix}
- A^{(1)} & 0 & 19 A^{(1)} & 0 & -31 A^{(1)}
- \end{pmatrix}, \\
- C = \begin{pmatrix}
- 0 & A^{(2)} & -15 A^{(2)} & 0 & 22 A^{(2)}
- \end{pmatrix}, \\
- D = \begin{pmatrix}
- 0 & 0 & 0 & A^{(4)} & 4 A^{(4)}
- \end{pmatrix}; \\
- \rk B = \rk C = \rk D = 1; \;\; A = B + C + D
- \\
- \end{multline*}
- \end{document}
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