21 lines
330 B
Markdown
21 lines
330 B
Markdown
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$$
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\newcommand{\div}[4]{
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\begin{array}{r|l}
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#1 & #2\\
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\hline
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\begin{array}[t]{r}#4\end{array} & \begin{array}[t]{l}#3\end{array}
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\end{array}
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}
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\newcommand{\matp}[3]{
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\begin{array}{cc}
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& #2 \\
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#1 & #3
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\end{array}
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}
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\newcommand{\R}{\mathbb{R}}
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\newcommand{\C}{\mathbb{C}}
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\newcommand{\N}{\mathbb{N}}
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\newcommand{\Z}{\mathbb{Z}}
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$$
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