deletions | additions       diff --git a/Explicit Derivative.tex b/Explicit Derivative.tex  index 45df8ac..46d5d9e 100644  --- a/Explicit Derivative.tex  +++ b/Explicit Derivative.tex 
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\end{equation}  The strange additional term is curious. Perhaps, the expansion of binomial like terms canceled out all but this central term.  On another note, it was seen that $q=\pi a^2/2$ and then with increasing $a$ the approximation improves. (However the power will increase drastically, and therefore require some computation.