The concept of monotonicity is another key concept that students should become familiar with when studying NCERT Solutions Chapter 6 Class 12 Maths Revision Notes. If a function has either decreasing or growing values over its entire domain, as specified in the notes, the function is said to be monotonic. For example, f (x) = ex, f (x) = nx, and f (x) = 2x + 3 are all legitimate functions of x. Non-monotonic functions, on the other hand, are decreasing or growing in certain domains and are distinguished from monotonic functions.
For example, f (x) = x2 and f (x) = sin x are both valid functions. No monotonicity is not asked in the CBSE class 12 board examination, but it is an important concept for JEE 2022.