Math Chapter Wise Properties Of Triangle And Circular Inverse Function English MCQ PGT 2011 Q.If 1 2 2x y sin 1 x − = + where 0<x<1 and 0 y 2 π < < then dy dx is equal to: A2/1+ x B2 2x 1+ x C2 1 1+ x D2 x 1+ x − Show answer Correct answer: 2/1+ x