I feel like an idiot asking this, but I need a check on a derivation. Can anyone verify this for me or let me know if its wrong?(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

Expand the equation.

2. Relevant equations

0 = m[tex]\frac{d}{dr}[/tex]([tex]\frac{1}{r}[/tex][tex]\frac{d}{dr}[/tex](ru))

3. The attempt at a solution

[tex]\frac{d2u}{dr2}[/tex]+[tex]\frac{1}{r}[/tex][tex]\frac{du}{dr}[/tex]-[tex]\frac{u}{r2}[/tex] = 0

or

u'' + u'/r - u/r^{2}= 0

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# Homework Help: Derivation Sanity Check.

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