y" +y = cos x; y(0) = 1, y'(0) =-1 %3D

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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```markdown
## 3.5 Problems

In Problems 1 through 20, find a particular solution \( y_p \) of the given equation. In all these problems, primes denote derivatives with respect to \( x \).

1. \( y'' + 16y = e^{3x} \)
2. \( y'' - y' - 2y = 3x + 4 \)
3. \( y'' - y - 6y = 2 \sin 3x \)
4. \( 4y'' + 4y' + y = 3xe^x \)
5. \( y'' + y' + y = \sin^2 x \)
6. \( 2y'' + 4y' + 7y = x^2 \)
7. \( y'' - 4y = \sinh x \)
8. \( y'' - 4y = \cosh 2x \)
9. \( y'' + 2y' - 3y = 1 + xe^x \)
10. \( y'' + 9y = 2 \cos 3x + 3 \sin 3x \)
11. \( y^{(3)} + 4y'' = 3x - 1 \)
12. \( y^{(3)} + y' = 2 - \sin x \)
13. \( y'' + 2y' + 5y = e^x \sin x \)
14. \( y^{(4)} - 2y'' + y = xe^x \)
15. \( y(5) + 5y(4) - y = 17 \)
16. \( y'' + 9y = 2x^2 e^{3x} + 5 \)
17. \( y'' + y = \sin x + x \cos x \)
18. \( y^{(4)} - 5y'' + 4y = e^x - xe^2 x \)
19. \( y^{(5)} + 2y(3) + 2y'' = 3x^2 - 1 \)
20. \( y^{(3)} - y = e^x + 7 \)

In Problems 21 through 30, set up the appropriate form of a particular solution \( y_p
Transcribed Image Text:```markdown ## 3.5 Problems In Problems 1 through 20, find a particular solution \( y_p \) of the given equation. In all these problems, primes denote derivatives with respect to \( x \). 1. \( y'' + 16y = e^{3x} \) 2. \( y'' - y' - 2y = 3x + 4 \) 3. \( y'' - y - 6y = 2 \sin 3x \) 4. \( 4y'' + 4y' + y = 3xe^x \) 5. \( y'' + y' + y = \sin^2 x \) 6. \( 2y'' + 4y' + 7y = x^2 \) 7. \( y'' - 4y = \sinh x \) 8. \( y'' - 4y = \cosh 2x \) 9. \( y'' + 2y' - 3y = 1 + xe^x \) 10. \( y'' + 9y = 2 \cos 3x + 3 \sin 3x \) 11. \( y^{(3)} + 4y'' = 3x - 1 \) 12. \( y^{(3)} + y' = 2 - \sin x \) 13. \( y'' + 2y' + 5y = e^x \sin x \) 14. \( y^{(4)} - 2y'' + y = xe^x \) 15. \( y(5) + 5y(4) - y = 17 \) 16. \( y'' + 9y = 2x^2 e^{3x} + 5 \) 17. \( y'' + y = \sin x + x \cos x \) 18. \( y^{(4)} - 5y'' + 4y = e^x - xe^2 x \) 19. \( y^{(5)} + 2y(3) + 2y'' = 3x^2 - 1 \) 20. \( y^{(3)} - y = e^x + 7 \) In Problems 21 through 30, set up the appropriate form of a particular solution \( y_p
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