Problem 9. (1 point) Problem 14. (1 point) Use integration by parts to evaluate the integral. For each of the following integrals, indicate whether integration by substitution or integration by parts is more appropriate, or if ( In (7x) ) 'dx neither method is appropriate. Do not evaluate the integrals. 1. fxsinxdx +c . A. substitution Answer(s) submitted: . B. integration by parts . C. neither (incorrect) Problem 10. (1 point) Itx4 dx Evaluate the integral. . A. integration by parts . B. neither xp (x/ L)uere y . C. substitution 3. Sxe dx . A. neither Answer(s) submitted: . B. substitution . C. integration by parts (incorrect) Problem 11. (1 point) 4. fx cos(x4 ) dx First make a substitution and then use integration by parts to eval- . A. substitution uate the integral . B. neither C. integration by parts x'cos(x ) dx VAXtia Answer(s) submitted: . A. integration by parts . B. substitution (incorrect) . C. neither Problem 12. (1 point) Use integration by parts to evaluate the integral. (Note that because this is multiple choice, you will not be able to see which parts of the problem you got correct.) Answer(s) submitted. Answer(s) submitted: (incorrect) (incorrect) Problem 13. (1 point) Problem 15. (1 point) If g(1) = -5, 8(5) =9, and / 8(x) dx= -7, evaluate the integral Suppose a particle moves along a straight line with velocity [ x8'(x) dx. v(t) = the- meters per second after t seconds. It travels meters during the first t sec- Answer: ond Answer(s) submitted: Answer(s) submitted: (incorrect) (incorrect) 2