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2 changes: 1 addition & 1 deletion lecture04/lecture04.tex
Original file line number Diff line number Diff line change
Expand Up @@ -180,7 +180,7 @@ \subsubsection*{Amplitude Properties}

\item \emph{Homogeneity}: A system is homogeneous if it satisfies the equation
\[
\mathcal{S}[\alpha f_i[n, m]] = \alpha\mathcal{S}[f_i[n, m]
\mathcal{S}[\alpha f_i[n, m]] = \alpha\mathcal{S}[f_i[n, m]]
\]

\item \emph{Superposition}: A system has the property of superposition if it satisfies the equation
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