tvaluate. Choose the best method and the answer. I 23:83:\"(13: a. u-substitution, with u = 23;, = 2. b. u-substitution, with u = 333', 3: = 333'\". c. integration by parts, with u = 23;. d. integration by parts, with 'u, = .333. Integrate. Choose the best approach and the answer. I sin3 a: do: a. use sin2 m = NIH (1 cos 23), then use u-substitution b. use 31113 a; = 1 _ 0082 as: then use u-substitution c. cosa: | %cos3 a: + C d. %cos3 a: + C e. %cos3 :1: gsin3 a: | C Which of the following is equivalent to f V \"29 du' and which substitution is used? '11. a.3ftan26d6l b.3fsec26d6 C.3fsin26'd9 d.u=3sec6 e. u = 351116 f. u = 31321116