Quiz 8. Choose the letter of the correct answer. X 1. dx 1+ x a 1 + In C. 1 + In WINWIN b. 1 - In (5 d. 1 - In 2. |cos x | dx a. 0 C. 2 b. 1 d. 3 In 2 3. sinh x dx a. 1/4 b. 1/3 C. 1/2 d. 1 4. dx Vx2 - 9 a. In 6 b. In 5 C. In 4 d. 5. 1 + Vx dx a. 2 + In(9/4) b. 2 - In (9/4) C. 2 + 2In(3/2) d. 2 - 2In(9/4) 6. [f (x) dx where f (x) = (x2 +1 x>5 2x xS 5 a. 211/3 C. 157/3 b. 187/3 d. 143/3 - It /2 sin t 7 dt sint + cost a TT/ 4 b. It/3 C. It/2 d. TT Vx - 3 8 16 - x+ Vx-3 a. 1 C. 0.25 b. 0.75 0.5 9 x sin x dx a TT C. TT/3 b. IT/2 d. |TT/4 10. xe * dx -00 a -1 C. 1 b. 0 d