Difference between revisions of "Sandbox"

Quantum GIS like this like this $\frac{1}{2}$ like this http://geo.fsv.cvut.cz http://osgeo.org test $\operatorname{erfc}(x) = \frac{2}{\sqrt{\pi}} \int_x^{\infty} e^{-t^2}\,dt = \frac{e^{-x^2}}{x\sqrt{\pi}}\sum_{n=0}^\infty (-1)^n \frac{(2n)!}{n!(2x)^{2n}}$