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34: Section 9.4 Answers

  • Page ID
    103654
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    1. \({1\over (s-10)^2}\)

    2. \({6\over (s+2)^4}\)

    3. \({3\over (s-1)^2+9}\)

    4. \({1\over s-6}+{3\over (s-6)^2}-{2\over (s-6)^3}\)

    5. \({s\over s^2-16}+{s-1\over (s-1)^2-16}-3{s+2\over (s+2)^2-16}\)

    6. \(\frac{t^{3}e^{7t}}{2}\)

    7. \(2e^{2t}\cos 3t\)

    8. \(\frac{e^{-2t}}{4}\sin 4t\)

    9. \(\frac{e^{2t}}{2}\sinh 2t\)

    10. \(\frac{2e^{3t}}{3}\sinh 3t\)

    11. \(t^{2}e^{7t}+\frac{17}{6}t^{3}e^{7t}\)

    12. \(e^{2t}\left(\frac{1}{6}t^{3}+\frac{1}{6}t^{4}+\frac{1}{40}t^{5}\right)\)

    13. \(e^{-3t}\left(\cos 3t+\frac{2}{3}\sin 3t\right)\)

    14. \((1-t)e^{-t}\)

    15. \(\left( 1-t-t^{2}-\frac{1}{6}t^{3}\right)e^{-t}\)

    16. \(e^{t}\left(2\cos 2t+\frac{5}{2}\sin 2t\right)\)

    17. \(3te^{-2t}-2\cos 2t-3\sin 2t\)

    18. \(\frac{2}{5}\sin t+\frac{6}{5}\cos t+\frac{7}{5}e^{-t}\sin t-\frac{6}{5}e^{-t}\cos t\)

    19. \(\frac{8}{13}e^{2t}-\frac{8}{13}e^{-t}\cos 2t+\frac{15}{26}e^{-t}\sin 2t\)

    20. \(e^{t}(\cos 2t+\sin 2t)-e^{-t}\left( \cos 3t+\frac{4}{3}\sin 3t\right)\)

    21. \(e^{3t}\left(-\cos 2t+\frac{3}{2}\sin 2t\right)+e^{-t}\left(\cos 2t+\frac{1}{2}\sin 2t\right)\)

    22. \(e^{-2t}\left(\frac{1}{8}\cos t+\frac{1}{4}\sin t\right)-e^{2t}\left(\frac{1}{8}\cos 3t-\frac{1}{12}\sin 3t\right)\)

    23. \(e^{2t}\left(\cos t+\frac{1}{2}\sin t\right)-e^{3t}\left(\cos 2t-\frac{1}{4}\sin 2t\right)\)

    24 \(e^{t}\left(\frac{1}{5}\cos t+\frac{2}{5}\sin t\right)-e^{-t}\left(\frac{1}{5}\cos 2t+\frac{2}{5}\sin 2t\right)\)

    25. \(e^{t/2}\left(-\cos t+\frac{9}{8}\sin t\right)+e^{-t/2}\left(\cos t-\frac{1}{8}\sin t\right)\)

    26. \(\frac{e^{t}}{16}(1-\cos 4t)\)

    27. \(\frac{4}{9}e^{2t}+\frac{5}{9}e^{-t}\sin 3t-\frac{4}{9}e^{-t}\cos 3t\)

    28. \(3e^{t/2}-\frac{7}{2}e^{t}\sin 2t-3e^{t}\cos 2t\)

    29. \(\frac{1}{4}e^{3t}-\frac{1}{4}e^{-t}\cos 2t\)

    30. \(\frac{1}{9}e^{2t}-\frac{1}{9}e^{-t}\cos 3t+\frac{5}{9}e^{-t}\sin 3t\)

    31. \(-\frac{3}{5}e^{-t}\sin t+\frac{1}{5}e^{-t}\cos t-\frac{1}{2}e^{-t}+\frac{3}{10}e^{t}\)

    32. \(-\frac{1}{10}e^{t}\sin t-\frac{7}{10}e^{t}\cos t+\frac{1}{5}e^{-t}+\frac{1}{2}e^{2t}\)

    33. \(\frac{3}{10}+\frac{1}{10}e^{2t}+\frac{1}{10}e^{t}\sin 2t-\frac{2}{5}e^{t}\cos 2t\)

    34. \(-\frac{4}{9}e^{2t}\cos 3t+\frac{1}{3}e^{2t}\sin 3t-\frac{5}{9}e^{2t}+e^{t}\)

    35. \(y=te^{-4t}+2e^{-4t}\)

    36. \(y=e^{-t}+2te^{-t}\)

    37. \(y={1\over 9}t+{2\over 27}-{2\over 27}e^{3t}+{10\over 9}te^{3t}\)

    38. \(y=-{3\over 2}e^{3t}\sin 2t\)

    39. \({1\over 2}-{1\over 2}e^t\cos t+{1\over 2}e^t\sin t\)

    40. \(y=-3\cos t-2\sin t+e^{-t}(2+5t)\)

    41. \(y=e^{t}(\cos t-3\sin t)+e^{3t}\)

    42. \(y=-1+t+e^{-t}(3\cos t-5\sin t)\)

    43. \(y=4\cos t-3\sin t-e^{t}(3\cos t-8\sin t)\)

    44. \(y=e^{-t}-2e^{t}+e^{-2t}(\cos 3t- 11/3\sin 3t)\)

    45. \(y=e^{-t}(\sin t-\cos t)+e^{-2t}(\cos t+4\sin t)\)

    46. \(y=e^{-t/2}(5\cos (t/2)-\sin (t/2))+2t-4\)

    47. \(y=\frac{1}{17}(12\cos t+20\sin t-3e^{t/2}(4\cos t+\sin t))\)

    48. \(y=\frac{e^{-t/2}}{10}(5t+26)-\frac{1}{5}(3\cos t+\sin t)\)

    49. \(y=\frac{1}{100}(3e^{3t}-e^{t/3}(3+310t))\)

    50. \(y={3\over 2}e^{-7t/2}\cos {\sqrt {15}\over 2}t+{7\sqrt {15}\over 10}e^{-7t/2}\sin {\sqrt {15}\over 2}t\)

    51. \(\frac{1}{a}e^{\frac{b}{a}t}f\left(\frac{t}{a}\right)\)


    This page titled 34: Section 9.4 Answers is shared under a not declared license and was authored, remixed, and/or curated by William F. Trench.

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