Then, due to convergence properties for the power-series of = ∑[infinity] =0 , we have, = ∑] [infinity] =0 = ∑[infinity] =0 = 1 + ∑ 1[infinity] =1 . this is very useful give part (c) of the problem 1, above. problem: use the power series for = = 2 2 to determine the values of = .