12. [-/1 Points] DETAILS OSCALC1 7.1.001. MY NOTES PRACTICE ANOT In using the technique of integration by parts, you must carefully choose which expression is u. Choose u. Do not evaluate the integral. x3 e 6X dx U =13. [-/1 Points] DETAILS OSCALC1 7.1.003. In using the technique of integration by parts, you must carefully choose which expression is u. Choose u. Do not evaluate the integral. *3 cos(y ) dx U =20. [-/1 Points] DETAILS OSCALC1 7.1.038-046A.WA.TUT. Evaluate the definite integral. 4 In(x) Vx dx21. [0/1 Points] DETAILS PREVIOUS ANSWERS OSCALC1 7.1.038-046C.WA.TUT. Compute the definite integral. ge* sin(x) dx 023. [-/1 Points] DETAILS OSCALC1 7.1.046. Compute the definite integral. Use a graphing utility to confirm your answer. x5* dx o