Using the method of Variation of Parameters, the particular solution y, for the NHLDE y"+y=sec x ¡s A y,= (cosx) (In|cosx) +xsinx B y = (cosx) (In sin x) +xsinx C) y =xcosx + (sinx) (In cosx|) (D) y =xcosx + (sinx) (In |sinx)

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