1. 12t2
2. (eat−at−1)/a2
3. 12(sin t−t cos t)
4. 2(t− sin t)
5. teat
6. (eat−ebt)/(a−b)
7. 13(e3t−1)
8. 14(1− cos 2t)
9. 154(sin 3t−3t cos 3t)
10. (kt− sin kt)/k3
11. 14(sin 2t+2t cos 2t)
12. 15[1−e−2t(cos t+2 sin t)]
13. 110(3e3t−3 cos t+sin t)
14. 13(cos t− cos 2t)
15. 6s/(s2+9)2, s>0
16. (2s3−24s)/(s2+4)3, s>0
17. (s2−4s−5)/(s2−4s+13)2, s>0
18. 2(3s2+6s+7)(s+1)2(s2+2s+5)2, s>0
19. 12π−arctans=arctan(1/s), s>0
20. 12ln(s2+4)−ln s, s>0
21. ln s−ln(s−3), s>3
22. ln (s+1)− ln (s−1), s>1
23. −(2 sinh 2t)/t
24. 2(cos 2t− cos t)/t
25. e−2t+e3t−2 cos t)/t
26. (e−2t sin 3t)/t
27. 2(1−cos t)/t
28. 18(t sin t−t2 cos t)
29. (s+1)X'(s)+4X(s)=0; x(t)=Ct3e−t, C≠0
30. X(s)=A/(s+3)3; x(t)=Ct2e−3t, C≠0
31. (s−2)X'(s)+3X(s)=0; x(t)=Ct2e2t, C≠0
32. (s2+2s)X'(s)+(4s+4)X(s)=0; x(t)=C(1−t−e−2t−te−2t), C≠0
33. (s2+1)X'(s)+4sX(s)=0; x(t)=C(sin t−t cos t), C≠0
34. x(t)=Ce−2t(sin 3t−3t cos 3t), C≠0