on paper

") In the following exercises, given that 1 -x r with convergence in (-1, 1), n-0 find the power series for each function and identify its interval of convergence. 7x - 1 ( a) f (20) - 3 3x2 + 2x - 1 Hint for (a): present the rational function in terms of partial functions. (b) f (ac) - In (1 + 24). Hint for (b): use term-by-term differentiation or integration to find power series for this function