Constructing A Differential Equation From A Solution Set

  • Thread starter Baumer8993
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  • #1
Baumer8993
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Homework Statement



y = c1e3xcos(2x)+c2e3xsin(2x)+c3+c4x


Homework Equations



Differential Equations.

The Attempt at a Solution


I am having trouble what the roots are for the c3, and c4 parts. I know they are a repeated root, but is it just k= 0? It seems like it would work, but I am not sure.
 

Answers and Replies

  • #2
ehild
Homework Helper
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Homework Statement



y = c1e3xcos(2x)+c2e3xsin(2x)+c3+c4x


Homework Equations



Differential Equations.

The Attempt at a Solution


I am having trouble what the roots are for the c3, and c4 parts. I know they are a repeated root, but is it just k= 0? It seems like it would work, but I am not sure.

You are on the right track. What is the differential equation you got? If the solution of it agrees with the given one, you solved the problem.

ehild
 

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