Math Chapter Wise Limit, Continuity And Differentiability Of Function Of One Variable English MCQ PGT 2004 Q.If 2x + 2y = 2x + y, then dy dx is equal to A2 2 x y + − B2 2 1 2 x y + C2 1 2 1 2 y x y x − D2 2 2 x y x y + − Show answer Correct answer: 2 1 2 1 2 y x y x −