8.Using variation of parameters, solve for the particular solution of : (D² – 3D+ 2)y = cos (e¯*) O A. Yp = e^2x cos [e^(-x) ] O B. Yp = - e^2x cos [e^(-x)] O C. Yp = - e^2x sin [e^(-x)] O D. Yp = e^2x sin [e^(-x)]

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