Math Chapter Wise Ordinary And Partial Differential Equations, Integral Equations And Calculus Of Variations English MCQ UP PCS (Pre) 2005 Q.The solution of the differential equation ydx –xdy +(1+x2)dx+x2 sin ydy = 0 is: Ax2 –y+1+x cos y = cy Bx2 –y+1+x cos y = cx Cx2 –y–1–x cos y = cx Dnone of these Show answer Correct answer: x2 –y–1–x cos y = cx