Test post

Nov 17, 2017

$ \def\df{\triangleq} \def\E{\mathrm{e}} \def\J{\mathrm{j}} \def\Realpart{\mathop{\rm Re}\nolimits} \def\td{\text{d}} $

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\[x_2[n] \label{eq:x2}\]

$s \df \E$

\eqref{eq:x2}

$x_3[n]$

Test

a=5;
c=1;