Hello everybody, I need a help to create this array.
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3Hi, welcome. I think http://tex.stackexchange.com/questions/67487/how-to-do-a-table-with-top-corner-removed or http://tex.stackexchange.com/questions/64825/remove-border-of-top-left-table-cell might be helpful. – Torbjørn T. Mar 04 '17 at 23:33
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5Please do not ask the same question twice – GuM Mar 05 '17 at 00:06
1 Answers
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\documentclass{article}
\begin{document}
$\renewcommand\arraystretch{1.2}
\begin{array}{|c|c|c|c|c|c|}
\multicolumn{3}{c}{} & \multicolumn{3}{c}{B} \\
\cline{4-6}
\multicolumn{3}{c|}{} & 2 & 1 & 4 \\
\cline{4-6}
\multicolumn{3}{c|}{} & 5 & 0 & 1 \\
\cline{4-6}
\multicolumn{3}{c|}{} & 2 & 3 & 2 \\
\hline
3 & 1 & 2 & 3\cdot2+1\cdot5+2\cdot2 & 3\cdot1+1\cdot0+2\cdot3 & 3\cdot4+1\cdot1+2\cdot2\\
\hline
1 & 4 & 3 & & & \\
\hline
2 & 3 & 5 & & & \\
\hline
\multicolumn{3}{c}{A} & \multicolumn{3}{c}{AB} \\
\end{array}
$
\end{document}
gernot
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