-5 13) d sin t dt dx 13) O A) -cos (x5) - 1 B) sin (x 5) C) -x6 sin (x 5) D) 5x4 sin (x5) sin t 14) d 1 du dt 9 - u2 14) 1 A) B) cost cos t (9 - sin- t) 9 - sin t C) 1 9 - sin2 t D) - - cost 9 - sin t cot O 15) d de csc2 y dy 15) 7/4 A) csc2 0 cot 0 B) - csc2 0 csc2 (cot 0) C) - csc3 0 cot 0 D) csc2 (cot 0)Worksheet #1IB This worksheet is graded on completion. You must complete the entire worksheet to earn any credit. You answers do not have to be correct. Of course, it is better if they are, but the purpose of the this worksheet is the help you master the material. If you aren't sure about the mathematical steps, you can describe the process or support your solution by writing an explanation. NOTE: This worksheet has 2 parts. You must complete both parts to receive credit. Evaluate the integral using U-substitution 1) x dx (7x2 + 3)5 1) A) - - (7x2 +3)-6 +C B) -(7x2 +3)-4 + C C) - - ( 7 * 2 + 3)-4 + C D) - -(7x2+3)-6 + C 2) [ x3 x4 + 10 dx 2) )3(x4 + 10)3/2 + C B) - 1(x4+ 10)-1/2+C c) 2(x4 + 10) 3/2 4 C D) 1(x4 + 10)3/2 + C 3) dx xIn x5 3) A ) =In x5 +C B) In (In x5) + c C) In x5+ C D) LIn (In x 5) + c 4) [ In x3 X 4) A ) = ( In x 3)2 + c B) 1 In 3* zanx3 2 + c D) 1 ( In x 3)2 + C