Math Chapter Wise Limit, Continuity And Differentiability Of Function Of One Variable English MCQ UP PCS (Pre) 2009 Q.The differential coefficient of 1 2 2x tan 1 x − with respect to 1 2 2x sin 1 x − + is equal to A() 2 2 1 x 1 x + − B() 2 2 1 x 1 x − + C0 D1 Show answer Correct answer: 1