- #1

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**1. Using the complementary function and particular integral method find the solutio of the differential equation.**

d2y/dx^2 + 3 dy/dx +2y = 20cos2x

Which satisfies y(0) = 1 y'(0) = 0

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- Thread starter andrey21
- Start date

- #1

- 466

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d2y/dx^2 + 3 dy/dx +2y = 20cos2x

Which satisfies y(0) = 1 y'(0) = 0

- #2

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I know you can solve it with the method of undetermined coefficients OR Variation of Parameters.

- #3

- 466

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y = Ae^(-t) + Be(-2t)

Im just not sure how to find the particular integral!

- #4

Mark44

Mentor

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Minor note: The independent variable should be x, not t, since x is the independent variable in your differential equation.

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