- #1

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## Homework Statement

Set up

__but do not solve__for the appropriate particular solution yp for the differential equation

y''+25y=–1xcos(5x)

using the Method of Undetermined Coefficients (primes indicate derivatives with respect to x).

In your answer, give undetermined coefficients as A, B, etc.

## Homework Equations

Possible Derivatives

- sin(x)
- cos(x)
- xsin(x)
- xcos(x)

## The Attempt at a Solution

This seems like the solution should simply be

[tex] A*x*sin(5*x)+B*x*cos(5*x)+C*cos(5*x)+D*sin(5*x) [/tex]