Question 10 Using the method of Variation of Parameters, the particular solution Y, for the NHLDE y"+y=sec x is A) y, =xcosx + (sinx) (In |sinx|) B) y, =xcosx + (sinx) (In|cosx|) y, = (cosr) (In|sin x|) +xsinx y = (cosx) (In cosx) +xsinx

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