Math Chapter Wise Ordinary And Partial Differential Equations, Integral Equations And Calculus Of Variations English MCQ TGT 1999 Q.2 2 (x y)dx 2xy dy + = + = solution is: Akx = (x2 – y2) Bk (x2 – y2) = x C(x2 – y2) = x DNone of these Show answer Correct answer: k (x2 – y2) = x