deletions | additions       diff --git a/untitled.tex b/untitled.tex  index 45ddb05..4d89f5e 100644  --- a/untitled.tex  +++ b/untitled.tex 
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&x_{t+1}=x_{t}+a*t+6.9+E_{t}&\\  &z_{t}=x_{t}+N_{t}&   \end{eqnarray}  \right.  \begin{equation}  \begin{matrix}  \hat{\Phi}[k,l] & =  & \left\{ 
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0 & \mbox{if } k,l = 0 \\  S_x[k,l]\cdot H_x[k,l] + S_y[k,l]\cdot H_y[k,l] & \mbox{otherwise }  \end{matrix} \right.  \end{matrix}\end{equation}