15 lines
465 B
TeX
15 lines
465 B
TeX
\documentclass[12pt]{article}
|
|
|
|
\begin{document}
|
|
\thispagestyle{empty}
|
|
|
|
\begin{eqnarray*}
|
|
S_3(r) = \left\lbrace \begin{array}{ll}
|
|
1 & \quad\mathrm{if}\quad r < r_\mathrm{c} - w \\
|
|
3x^2 - 2x^3 & \quad\mathrm{if}\quad r < r_\mathrm{c} \quad\mathrm{with\quad} x=\frac{r_\mathrm{c} - r}{w} \\
|
|
0 & \quad\mathrm{if}\quad r >= r_\mathrm{c}
|
|
\end{array} \right.
|
|
\end{eqnarray*}
|
|
|
|
\end{document}
|