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## Main Question or Discussion Point

Hi group,

Could someone 'remind me' why the equation u" + u = km/L^2 has the solution of the form u(theta) = km/L^2 + C cos(theta - theta(o)).

Any references would be appreciated.

Thanks

Dave

Could someone 'remind me' why the equation u" + u = km/L^2 has the solution of the form u(theta) = km/L^2 + C cos(theta - theta(o)).

Any references would be appreciated.

Thanks

Dave