I've posted this before with no help. I'm stuck on 11, 17, 19. Please help!

7-18 Use (a) the Trapezoidal Rule, (b) the Midpoint Rule, and (c) Simpson's Rule to approximate the given integral with the specified value of n. (Round your answers to six decimal places.) VE3-lax, n=10 8. e* 9. n = 10 o 1 +r' dr, (4x3 sin x dx, (3 ei/x dx, 11. n=8 12. n-3 13. cos dy. 14. d1 15.50 13.Vy cos y dy, n-8 s sin t 51? dx, n-10 16. 1 +x 17. ., In(1 + e*) dr, n = 8 19. (a) Find the approximations Ts and Me for the integral cos(x) dx (b) Estimate the errors in the approximations of part (a), (c) How large do we have to choose n so that the approximations T, and M, to the integral in part (a) are accurate to within 0.0001? 20. (a) Find the approximations Tho and Mio for eV dx (b) Estimate the errors in the approximations of part (a)