Small part of central potentials in quantum

[Chronos000]

Homework Statement

im manipulating the Schrödinger equation for a central potential.

at some point I need 1/r² d/dr (r² dR/dr ) to equal X^''/r

where R = X/r

when i sub in R i get

1/r ( - dX/dr -1/r² X^'' +1/r X^'' )

I'm most likely making an obvious error but nevertheless...

 

[Chronos000]

solved it

 

[vela]

Show us your detailed calculations. It's impossible to say where your mistake is without seeing your work.

 

[Chronos000]

Thanks for your reply, I tried to delete the question once I'd solved it via edit but it wouldn't let me. Do you know how to?

 

[vela]

Only forum moderators can delete threads as far as I know.