deletions | additions       diff --git a/untitled.tex b/untitled.tex  index f73d30c..94ab64d 100644  --- a/untitled.tex  +++ b/untitled.tex 
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\end{equation}  I would have no idea where to plop an $a$ on the left right  hand side if we brought one into the exponent, it may well be on the bottom but I don't know at this stage. stage...  However using our theorem that we can replace $x$ times the regular derivative on the left hand side and flip the sign of the constant right we would have \begin{equation}