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  • How about this one "g(x,y)=\begin{cases}1 & If s hits f\\ 0 & otherwise\end{cases}". How to add space between "if s hits f"?? Commented Aug 28, 2013 at 15:19
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    @FarhatMann This is another question. Please post a new one in these cases. Anyway the answer is g(x,y)=\begin{cases}1 & \text{If $s$ hits $f$}\\ 0 & \text{otherwise}\end{cases} and requires the package amsmath Commented Aug 28, 2013 at 15:55
  • How to make it displayed in center of the pages? Because if i write the equation, it will display in the left side of the page. Commented Aug 30, 2013 at 5:21