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11.51: A.8.2- Section 8.2 Answers

Last updated

Dec 31, 2022
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- 11.50: A.8.1- Section 8.1 Answers
- 11.52: A.8.3- Section 8.3 Answers

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$\frac{t^{3}e^{7t}}{2}$
$2e^{2t}\cos 3t$
$\frac{e^{-2t}}{4}\sin 4t$
$\frac{2}{3}\sin 3t$
$t\cos t$
$\frac{e^{2t}}{2}\sinh 2t$
$\frac{2te^{2t}}{3}\sin 9t$
$\frac{2e^{3t}}{3}\sinh 3t$
$e^{2t}t\cos t$

$t^{2}e^{7t}+\frac{17}{6}t^{3}e^{7t}$
$e^{2t}\left(\frac{1}{6}t^{3}+\frac{1}{6}t^{4}+\frac{1}{40}t^{5}\right)$
$e^{-3t}\left(\cos 3t+\frac{2}{3}\sin 3t\right)$
$2\cos 3t+\frac{1}{3}\sin 3t$
$(1-t)e^{-t}$
$\cosh 3t+\frac{1}{3}\sinh 3t$
$\left( 1-t-t^{2}-\frac{1}{6}t^{3}\right)e^{-t}$
$e^{t}\left(2\cos 2t+\frac{5}{2}\sin 2t\right)$
$1-\cos t$
$3\cosh t+4\sinh t$
$3e^{t}+4\cos 3t+\frac{1}{3}\sin 3t$
$3te^{-2t}-2\cos 2t-3\sin 2t$

$\frac{1}{4}e^{2t}-\frac{1}{4}e^{-2t}-e^{-t}$
$\frac{1}{5}e^{-4t}-\frac{41}{5}e^{t}+5e^{3t}$
$-\frac{1}{2}e^{2t}-\frac{13}{10}e^{-2t}-\frac{1}{5}e^{3t}$
$-\frac{2}{5}e^{-4t}-\frac{3}{5}e^{t}$
$\frac{3}{20}e^{2t}-\frac{37}{12}e^{-2t}+\frac{1}{3}e^{t}+\frac{8}{5}e^{-3t}$
$\frac{39}{10}e^{t}+\frac{3}{14}e^{3t}+\frac{23}{105}e^{-4t}-\frac{7}{3}e^{2t}$

$\frac{4}{5}e^{-2t}-\frac{1}{2}e^{-t}-\frac{3}{10}\cos t+\frac{11}{10}\sin t$
$\frac{2}{5}\sin t+\frac{6}{5}\cos t+\frac{7}{5}e^{-t}\sin t-\frac{6}{5}e^{-t}\cos t$
$\frac{8}{13}e^{2t}-\frac{8}{13}e^{-t}\cos 2t+\frac{15}{26}e^{-t}\sin 2t$
$\frac{1}{2}te^{t}+\frac{3}{8}e^{t}+e^{-2t}-\frac{11}{8}e^{-3t}$
$\frac{2}{3}te^{t}+\frac{1}{9}e^{t}+te^{-2t}-\frac{1}{9}e^{-2t}$
$-e^{t}+\frac{5}{2}te^{t}+\cos t-\frac{3}{2}\sin t$

$\frac{3}{5}\cos 2t+\frac{1}{5}\sin 2t-\frac{3}{5}\cos 3t-\frac{2}{15}\sin 3t$
$-\frac{4}{15}\cos t+\frac{1}{15}\sin t+\frac{4}{15}\cos 4t-\frac{1}{60}\sin 4t$
$\frac{5}{3}\cos t+\sin t-\frac{5}{3}\cos 2t-\frac{1}{2}\sin 2t$
$-\frac{1}{3}\cos \frac{t}{2}+\frac{2}{3}\sin\frac{t}{2}+\frac{1}{3}\cos t-\frac{1}{3}\sin t$
$\frac{1}{15}\cos\frac{t}{4}-\frac{8}{15}\sin\frac{t}{4}-\frac{1}{15}\cos 4t+\frac{1}{30}\sin 4t$
$\frac{2}{5}\cos\frac{t}{3}-\frac{3}{5}\sin\frac{t}{3}-\frac{2}{5}\cos\frac{t}{2}+\frac{2}{5}\sin\frac{t}{2}$

$e^{t}(\cos 2t+\sin 2t)-e^{-t}\left( \cos 3t+\frac{4}{3}\sin 3t\right)$
$e^{3t}\left(-\cos 2t+\frac{3}{2}\sin 2t\right)+e^{-t}\left(\cos 2t+\frac{1}{2}\sin 2t\right)$
$e^{-2t}\left(\frac{1}{8}\cos t+\frac{1}{4}\sin t\right)-e^{2t}\left(\frac{1}{8}\cos 3t-\frac{1}{12}\sin 3t\right)$
$e^{2t}\left(\cos t+\frac{1}{2}\sin t\right)-e^{3t}\left(\cos 2t-\frac{1}{4}\sin 2t\right)$
$e^{t}\left(\frac{1}{5}\cos t+\frac{2}{5}\sin t\right)-e^{-t}\left(\frac{1}{5}\cos 2t+\frac{2}{5}\sin 2t\right)$
$e^{t/2}\left(-\cos t+\frac{9}{8}\sin t\right)+e^{-t/2}\left(\cos t-\frac{1}{8}\sin t\right)$

$1-\cos t$
$\frac{e^{t}}{16}(1-\cos 4t)$
$\frac{4}{9}e^{2t}+\frac{5}{9}e^{-t}\sin 3t-\frac{4}{9}e^{-t}\cos 3t$
$3e^{t/2}-\frac{7}{2}e^{t}\sin 2t-3e^{t}\cos 2t$
$\frac{1}{4}e^{3t}-\frac{1}{4}e^{-t}\cos 2t$
$\frac{1}{9}e^{2t}-\frac{1}{9}e^{-t}\cos 3t+\frac{5}{9}e^{-t}\sin 3t$

$-\frac{3}{10}\sin t+\frac{2}{5}\cos t-\frac{3}{4}e^{t}+\frac{7}{20}e^{3t}$
$-\frac{3}{5}e^{-t}\sin t+\frac{1}{5}e^{-t}\cos t-\frac{1}{2}e^{-t}+\frac{3}{10}e^{t}$
$-\frac{1}{10}e^{t}\sin t-\frac{7}{10}e^{t}\cos t+\frac{1}{5}e^{-t}+\frac{1}{2}e^{2t}$
$-\frac{1}{2}e^{t}+\frac{7}{10}e^{-t}-\frac{1}{5}\cos 2t+\frac{3}{5}\sin 2t$
$\frac{3}{10}+\frac{1}{10}e^{2t}+\frac{1}{10}e^{t}\sin 2t-\frac{2}{5}e^{t}\cos 2t$
$-\frac{4}{9}e^{2t}\cos 3t+\frac{1}{3}e^{2t}\sin 3t-\frac{5}{9}e^{2t}+e^{t}$

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

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