Math Chapter Wise Limit, Continuity And Differentiability Of Function Of One Variable English MCQ Haryana PGT 2019 Q.If k x +1,0 x 3 f(x) = mx + 2, 3x 5 ≤≤≤≤ is differentiable. then k+m = A2 B16/5 C10/3 D4 Show answer Correct answer: 2