Evaluate the following integral. 2 - 4x sin 3 (x2) dx O JC 4x sin 3 (x2) dx = (Type an integer or a simplified fraction.) OEvaluate 3 18 tan "x dx. 3 18 tan ~x dx =Evaluate the following integral. 6 sin "x cos "x dx 3 6 sin x cos x dx =Evaluate the following integral. 2 2 9 sin x cos x dx 9 sin 2 2. ~X cos ~ x dx =3 Evaluate COS (5x) sin (5x) dx. 3 COS (5x) sin - 2 (5x) dx = Integrate the given function. 3 cos x dx 2x dx = 3 cos xEvaluate the following integral using trigonometric substitution. 3 1 l ,7 d x 1x21+x2 4. What substitution will be the most helpful for evaluating this integral? {:3 A. x = sin 6 {:3 B. x = set: 8 {:3- C. x = tan 6 Evaluate the following integral using trigonometric substitution. dt 12 1/4 -12 What substitution will be the most helpful for evaluating this integral? O A. t= 2 sin 0 O B. t= 2 sec0 O C. t = 2 tan 0Evaluate the following integral using trigonometric substitution. What substitution will be the most helpful for evaluating this integral? {:3 A. x = 4 sec 6 {:3- B. x = 4 sin 8 {:3 C. x = 4 tan 6 Evaluate the following integral using trigonometric substitution. IL (81 +13) What substitution will be the most helpful for evaluating this integral? (:3 A. x = 9 tan 6 {:3- B. x = 9 sec 6 {:3- C. x = 9 sin 8 Evaluate the following integral using trigonometric substitution. 343 2 X 1" 2 0 36X What substitution will be the most helpful for evaluating this integral? {:3 A. x = 6 tan 6 {:1- B. x = 6 sin 8 {:1- C. x = 6 sec 6 What change of variables is suggested by an integral containing I 256 - x2 ? Choose the correct answer below. -:: :3 A. x = 256 sec 6 -:j :3 B. X: 256 sin 6 :1} C. x=165ec6 :1} D. x=165in6