26 lines
865 B
TeX
26 lines
865 B
TeX
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\newtheorem{theorem}{Theorem}
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\newcommand{\diff}[2]{\frac{\partial #1}{\partial #2}}
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\newcommand{\diffr}[1]{\diff{#1}{r}}
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\newcommand{\diffth}[1]{\diff{#1}{\theta}}
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\newcommand{\diffz}[1]{\diff{#1}{z}}
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\newcommand{\vth}{V_{\theta}}
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\newcommand{\twochoices}[2]{\left\{ \begin{array}{lcc}
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\displaystyle #1 \\ \vspace{-10pt} \\
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\displaystyle #2 \end{array} \right. } %}
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\newcommand{\threechoices}[3]{\left\{ \begin{array}{lcc}
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#1 \\ #2 \\ #3 \end{array} \right. } %}
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\newcommand{\fourchoices}[4]{\left\{ \begin{array}{lcc}
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#1 \\ #2 \\ #3 \\ #4 \end{array} \right. } %}
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\newcommand{\twovec}[2]{\left(\begin{array}{c} #1 \\ #2 \end{array}\right)}
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\newcommand{\threevec}[3]{\left(\begin{array}{c} #1 \\ #2 \\ #3 \end{array}\right)}
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\newcommand{\twomatrix}[4]{\left(\begin{array}{cc} #1 & #2 \\ #3 & #4 \end{array}\right)}
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