Hello everyone,
does someone know what the value of [SUM (k from 0 to infinity) k²(x^k)] (with |x| < 1) is? I couldn't find it anywhere. :-( Are there any good online databases for such things?
Many thanks in advance!
Hi Hurkyl,
thanks again for the quick answer!
For 2: Coming back to your example (the complex conjugate of an integral of a single function), what if there was an operator like dpart/dpartx before f(x)? Could I still pull the star behind the f(x)?
Thanks in advance
Torsten
Hi everyone,
thank you very much for your answers!
Indeed I should have been more precise, I'm sorry. I did get to the point at which the partial integration can be done and I've actually done it. Two questions arise here:
1. What happens to 1/i phi* psi with x between plus and minus...
Hi everyone!
How can I find the Hermitian conjugate of the differential operator D, with
D psi = 1/i dpart/dpart(x) psi?
I know you can do this with partial integration starting from
<phi|D|psi>* = <phi|D+|psi>
but how exactly does it work?
I'm sorry for using such an ugly...