deletions | additions       diff --git a/Integration summation.tex b/Integration summation.tex  index 7f04678..e9feaa1 100644  --- a/Integration summation.tex  +++ b/Integration summation.tex 
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\begin{equation}  \zeta(s)=\frac{1}{\Gamma(z)}\int_0^\infty \frac{x^{s-1}}{e^x-1} \dx \\  (d)/(dx)(x^(s-1)/(e^x-1)) \frac{d}{dx}\frac{x^{s-1}}{e^x-1}  = ((e^x \frac{(e^x  (s-x-1)-s+1) x^(s-2))/(e^x-1)^2 x^{s-2}}{(e^x-1)^2} \\  \end{equation}