Recent content by adh2

Hi Tim! :) That's from \int cos^2 \theta = \frac{1}{2} \left(\theta + sin \theta cos \theta\right) ? U-substitution. My calculus-skills are somewhat rusty, so that didn't seem like a possibility. But of course you're right! \int_a^b f\left(g\left(x\right)\right)g'\left(x\right) dx =...

Thank you, that makes more sense! I just assumed there was a standard. In my calculus textbook by R A Adams the integration element used is with sin phi. But indeed, a closer look in my physical chemistry book (Atkin's Physical Chemistry) and I see he uses sin theta! :D I also thought the...

Hello! Homework Statement I'm revising my quantum mechanics course, but I don't get this normalizing-problem. \psi = N r cos \theta e^{-r/a_0} To begin with, this is how my teacher solves it in the solutions manual: 1=N^2\int_0^\infty r^2 e^{-r/a_0} r^2 dr \int_0^{\pi} \int_0^{2 \pi}...

Yes! That's it. Many thanks Tiny-Tim! :smile:

Hello! I'm preparing for my quantum mechanics test. In the solutions of an old test I find this conversion, that I don't understand. \Psi = Nze^{-r/2a_0} = Nre^{-r/2a_0}cos\Theta N is the normalization constant, which is to be calculated. I would have guessed that z is the atomic...