forked from lijiext/lammps
14 lines
337 B
TeX
14 lines
337 B
TeX
\documentclass[12pt]{article}
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\begin{document}
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\begin{eqnarray*}
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f_{c,1,IJ}=\left\{\begin{array}{lr}
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1, & r\leq r_{s,1,IJ} \\
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\frac{1}{2}+\frac{1}{2} cos \left[\frac{\pi \left(r-r_{s,1,IJ}\right)}{r_{c,1,IJ}-r_{s,1,IJ}}\right], & r_{s,1,IJ}<r<r_{c,1,IJ} \\
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0, & r \geq r_{c,1,IJ} \\
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\end{array}\right.
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\end{eqnarray*}
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\end{document}
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