forked from lijiext/lammps
19 lines
344 B
TeX
19 lines
344 B
TeX
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\documentstyle[12pt]{article}
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\begin{document}
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$$
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{R_G}^2 = \frac{1}{M}\sum_{i}^{N}{m_{i}\left( x_{i} -
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\frac{1}{M}\sum_{j}^{N}{m_{j}x_{j}} \right)^{2}}
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$$
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$$
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E = K\left( R_G - R_{G0} \right)^{2}
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$$
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$$
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F_{i} = 2K\frac{m_{i}}{M}\left( 1-\frac{R_{G0}}{R_G}
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\right)\left( x_{i} - \frac{1}{M}\sum_{j}^{N}{m_{j}x_{j}} \right)
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$$
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\end{document}
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