18 lines
186 B
TeX
Executable File
18 lines
186 B
TeX
Executable File
\documentclass[12pt]{article}
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\begin{document}
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$$
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\rho = \displaystyle\sum\limits_{i} f_i
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$$
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$$
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\rho u_{\alpha} = \displaystyle\sum\limits_{i} f_i e_{i\alpha}
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$$
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\end{document}
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