27 lines
608 B
TeX
27 lines
608 B
TeX
\documentclass{article}
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\usepackage{tikz}
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\usetikzlibrary{arrows}
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\usetikzlibrary{snakes}
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\usetikzlibrary{positioning}
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\usepackage{verbatim}
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\begin{document}
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\begin{tikzpicture}[scale=1.5, on grid]
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\draw [help lines](-2,-2) grid (2,2);
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\draw[-triangle 45, color=blue] (-0.75,0.5) -- (0.75,-0.5) node[sloped,below] { $-$};
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\draw[-triangle 45, color=red] (0.75,0.5) -- (-0.75,-0.5) node[sloped,below] { $+$};
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\node[] at (0,0) {$\left( {\begin{array}{*{20}c}
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{a_{11} } & {a_{12} } \\
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{a_{21} } & {a_{22} } \\
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\end{array}} \right)
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$};
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\end{tikzpicture}
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\end{document} |