deletions | additions       diff --git a/bits3.tex b/bits3.tex  index cddf9d9..4dc2ed8 100644  --- a/bits3.tex  +++ b/bits3.tex 
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for example  $$ f\,=\,x^3+x^2 \,,$$  using it to construct an LFSR.  The portion of $f$ without its leading term is only formed by $x^2$, and so no computation is needed to obtain the mysterious bit.  \\  We take the following initial state  \begin{center}