Answer: 2.
- A 1
- B 2
- C 3
- D 0
Correct answer: B. 2
Explanation: There are corners at x = 1 and x = 2, giving 2 points of non-differentiability.
Concept context
Ordered pairs, Cartesian products, types of relations and functions, domain and range. Foundation for calculus and Class 12 algebra.