Math Chapter Wise Limit, Continuity And Differentiability Of Function Of One Variable English MCQ PGT 2000 Q.If 1 x t t = + = + and 1 y t t = − = − then 2 d y dx is equal to: A2 2 4t(t 1) − − B3 2 3 4t (t 1)− − − C2 2 4t(t 1) − − D2 2 1 (t 1)(t 1)− + − Show answer Correct answer: 3 2 3 4t (t 1)− − −