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27 lines
772 B
27 lines
772 B
%%%%%%%%%%%%%%%%%%%%%%%
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%% Copyleft
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%% Walter A. Kehowski
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%% Department of Mathematics
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%% Glendale Community College
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%% walter.kehowski@gcmail.maricopa.edu
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%% \begin{linsys}{2}
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%% -x & + & 4y & = & 8\\
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%% -3x & - & 2y & = & 6
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%% \end{linsys}
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%%%%%%%%%%%%%%%%%%%%%%%
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\RequirePackage{array} % TLC p465
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\RequirePackage{pifont}
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\makeatletter
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%% math-mode column types ------------------
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\newcolumntype{\@R}{>{$}r<{$}}
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\newcolumntype{\@L}{>{$}l<{$}}
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\newcolumntype{\@C}{>{$}c<{$}}
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\newcounter{@dingctr}
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\newcommand{\@wding}{\ding{\value{@dingctr}}\stepcounter{@dingctr}}
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\newcommand{\@dinglabel}{\@wding}
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\newenvironment{linsys}[1]{%
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\setcounter{@dingctr}{192}%
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\begin{tabular}{!{\@dinglabel}*{#1}{\@R\@C}\@R}}%
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{\end{tabular}\setcounter{@dingctr}{192}}
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\makeatother
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\endinput
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