(a) Use differentiation to find a power series representation for f(x) = 1 (6 + x)2 . f(x) = [infinity] n = 0 What is the radius of convergence, R? R = (b) Use part (a) to find a power series for f(x) = 1 (6 + x)3 . f(x) = [infinity] n = 0 What is the radius of convergence, R? R = (c) Use part (b) to find a power series for f(x) = x2 (6 + x)3 . f(x) = [infinity] n = 2 What is the radius of convergence, R? R =