D. The Maclaurin series representation for f(x) = arctan(x2) is (-1)n x4n + 2 with radius of convergence R = 1 n=o (2n + 1)! DE. The Maclaurin series representation for f(x) = cos(x2) is (- 1)0 x40 with radius of convergence R = co n=0 (2n)! F. The Taylor series representation for f(x) = 3x centered at a = 1 is 00 30e3 nso n! (X- 1) with radius of convergence R = Do