User:Scottfarrar

Hi


 * $$\frac{\pi^2}{6}$$,
 * $$e^{i \pi} + 1 = 0, \,\! \sum_{k=0}^{n-1} e^{2 \pi i k/n} = 0 . \pi(x,a,d) = \frac{1}{\varphi(d)} \int_2^x \frac{1}{\ln t}\,dt + O(x^{1/2+\epsilon})\quad\mbox{ as } \ x\to\infty$$


 * $$e^{\ln x^2}e^{2x} + \log{10^{\log 10^2}} + \log_2{x^4}$$