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Mathematics 21 Online
OpenStudy (anonymous):

Can anyone solve this de with steps? Will undetermined coef method work in this case?

OpenStudy (anonymous):

(4/32)u''+32u=2cos3t

OpenStudy (anonymous):

I'm not the best at these so maybe someone will correct if I'm wrong, but yes I believe Method of Undetermined Coefficients will work. have you tried it? Start with the homogenous case

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