2. (16 points) .1 Sections 5.45.5 Determine the appropriate Taylor series expansion for the following functions. a. log(z + 21)1 2.3 = 0 b. 223' 223' + 8', 20 :1 c. 2 sin 22 1 Zn 2 0 d. coshz, 2:0 : 0 3. (16 points) .1 Sections 5.45.5 Use the ratio test to determine the radius of convergence (denote by R) in each of the cases in the previous