Math Chapter Wise Ordinary And Partial Differential Equations, Integral Equations And Calculus Of Variations English MCQ UP PCS (Pre) 1996 Q.Particular solution of the differential equation 2 d y dx + m2 y = a sin mx, is: Ac1 cos mx Bc2 sin mx Ca 2m − x cos mx Da 2m − x sin mx Show answer Correct answer: a 2m − x cos mx