# Understanding the Dirac Delta function

• I
redtree
I just want to make sure that I am understanding the Dirac Delta function properly. Is the following correct?:

For two variables ##x## and ##y##:

\begin{split}
\delta(x-y) f(x) &= f(y)
\end{split}

And:

\begin{split}
\delta(x-x) f(x) &= f(x)
\end{split}

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