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Differential Equation Solving Help

I am trying to solve the diff equation
x'' + ax' + bx = c

The ODE Linear nth Order Numeric function can handle the second derivative but not the c part, correct?

The euler and assorted solvers can't handle the second derivative nor the constant, correct?

Do I have any other options?

thanks.
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Let me also add that I'm just trying to solve it numerically.
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It has been a really long time since I have fired my DiffEq neurons. Plus all of my text books are at home.

I looked a the labVIEW shipping examples. (Open LabVIEW >> help >> file examples >> click on search tab and enter ODE.) Shooting method.vi seems to solve second order equations with a constant. I could be wrong. You may want to look at this one and the other examples for inspiration.
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