Determine

where and

What I dont understand is what's done next... ie if you look at the first term

. This expands out to

What is happening here?..

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- Feb 23rd 2011, 11:41 AMbugatti79Quantum Mechanics - Angular Momentum
Determine

where and

What I dont understand is what's done next... ie if you look at the first term

. This expands out to

What is happening here?.. - Feb 23rd 2011, 11:55 AMAckbeet
That's just the product rule, isn't it?

- Feb 23rd 2011, 12:00 PMTheEmptySet
- Feb 23rd 2011, 12:39 PMbugatti79
ok, what if for arguments sake that the function f only depend on x and y then

?

Any how, the original reduces down to

What is happening in the middle terms with the hbar over i moved inside the brackets? It may be a typo as I was writing furiously trying to keep up with the lecturer! (Giggle)

Thanks - Feb 23rd 2011, 01:19 PMAckbeet
Yes.

Quote:

Any how, the original reduces down to

What is happening in the middle terms with the hbar over i moved inside the brackets? It may be a typo as I was writing furiously trying to keep up with the lecturer! (Giggle)

Thanks

Computing should get you the far left term (minus the test function f).