Question 4 of 20 This test: 20 point(s) possible This question: 1 point(s) possible a. Use any analytical method to find the first four nonzero terms of the Taylor series centered at 0 for the following function. You do not need to use the definition of the Taylor series coefficients. b. If possible, determine the radius of convergence of the series. f(x) = cos (4x) + 4sin x a. Write the first four nonzero terms of the serires. Choose the correct answer below. O A. 1+x-2x2_ 2x 3 OB. 1+4x - 8x2. 2x3 3 -+ ... O c. 1-x+ 2x2 _ _ 2x3 3 - + ... OD. 1-4X + 8x2 -. 2x . ... b. Select the correct choice and fill in any answer boxes in your choice below. O A. The radius of convergence of the series is R = O B. It is not possible to determine the radius of convergence of the series.This test: 20 point(s} possible Question 5 01 20 > This queson: 1 p0int(s) possible Express the following Cartesian cootdinates in polar coordinates in two ways (me Select all that apply. : A. [*Ggn] : B. [7431:] :c. [-6%] : D [415.1%] [wet [we] : G. [6,%] : H [545% 4-42301) Khaled