Math Chapter Wise Ordinary And Partial Differential Equations, Integral Equations And Calculus Of Variations English MCQ SECTION B PGT TIER-I 31.11.2014 Q.Solution of differential equation xdy – ydx = 0 represents– AA rectangular hyperbola BParabola whose vertex is at origin CStraight line passing through origin DA circle whose centre is at origin Show answer Correct answer: Straight line passing through origin