Recent content by vokurka

∫1/(1+x^4) dx, from 0 to ∞ I have tried integration per partes, several different substitutions and transformation into different coordinate system but i have always only found another equivalent integral that i was not able to solve... I have also performed a numerical integration, but...

Thank you very much Mapes and John Creighto for help, now it is absolutely clear to me. :cool:

In my lab I measure some chemical data. Output from the software I use contain also some stats, like the mean value, standard deviation and some number called SIGMA MEAN. My typical dataset looks like this: sample MgO Al2O3 a 5,307872109 7,45113642 b 8,496074587 9,182072932 c...