1. The problem statement, all variables and given/known data Evaluate the telescoping sum. a) Sigma i=1 to n [i^4 - (i - 1)^4] 2. Relevant equations sigma i=1 to n [f(1) - f(i+1)] 3. The attempt at a solution so i plug in for the eqns. and get 1^4 - n^4 the correct answer should be n^4 but don't know how to get that.