# Homework Help: Time Delay of Neutrinos

1. Dec 7, 2008

### Epif

1. The problem statement, all variables and given/known data
http://img517.imageshack.us/img517/8112/neutrinosll8.jpg [Broken]

2. Relevant equations

3. The attempt at a solution
I was able to express the time delay as D(1-$$\frac{1}{1-\delta}$$). However, I don't have a lot of experience using Taylor series and did not use one to obtain said answer for the time delay. Any help would be appreciated. Thanks.

Last edited by a moderator: May 3, 2017
2. Dec 7, 2008

### Redbelly98

Staff Emeritus
They want you to expand the expression,

1 / (1-δ)

as a Taylor series. So you'll need the derivative of that expression with respect to δ.