The students who will be appearing for the CBSE Class 12th Examination 2020 can go through the list of important questions and answers for chapter 5 - Continuity and Differentiability. 8 (Linear Approximation and Differentials): download; Section 2. ∴ Other = 15 -x Now y = (15 -x) x = 15x -x 2 ∴ = 15 - 2x Equating =. Th1/2 cells differentiation and their micro-/lnRNA signatures. d / d (x) (x n) = nx n – 1, x ∈ R, n ∈ R 2. . . 3. Checking continuity at a particular point,; and over the whole domain; Checking a function is continuous using Left Hand Limit and Right Hand Limit; Addition, Subtraction, Multiplication, Division of.