1. The problem statement, all variables and given/known data Perform a Taylor Series expansion for γ in powers of β^2, keeping only the third terms (ie. powers up to β^4). We are assuming at β < 1. 2. Relevant equations γ = (1-β^2)^(-1/2) 3. The attempt at a solution I have no background in math so I do not know how to do Taylor expansion. Could you help me out? Thank you very much.