Math Chapter Wise Ordinary And Partial Differential Equations, Integral Equations And Calculus Of Variations English MCQ PGT 2009 Q.Singular solution of (xp – y)2 = p2 – 1 is Ax2 + y2 = 1 Bx2 – y2 = 1 Cx2 – y2 + 1 = 0 DNone of these Show answer Correct answer: x2 – y2 = 1