(adsbygoogle = window.adsbygoogle || []).push({}); [SOLVED] Zwiebach eqn (17.44) page 395

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

Equation (17.44) is:

[tex]e^{-i\ell x_0/R}pe^{i\ell x_0/R} = p + \frac{\ell}{R}[/tex]

2. Relevant equations

Equation (17.43)

[tex]\ell \in \mathbb{Z}[/tex]

3. The attempt at a solution

Equation (17.44) is easy to derive if [itex]\frac{\ell}{R}[/itex] is small. but since [itex]\ell[/itex] can be any integer, there doesn't seem to be any way to insure that. Did the author simply forget to mention some conditions necessary for it to be true?

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# Homework Help: Zwiebach eqn (17.44) page 395

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