How tto prepare for functions chapter thoroughly (for CAT)- is the theory part really needed? I am decent at it but want to consolidate it, how do I do it?

Hi Functions in CAT have had a significant weightage since last two years and we can expect at least 2 questions from functions this year as well . The theory part acts as a foundation and makes you aware of all the concepts which can be applied in solving problems . Try to cover the classroom and concept videos and that will be sufficient as mam has covered everything in detail in them and a good amount of questions have also been included in them for practice.

sir i have similar query ,do we need to solve questions based on concepts like- no of bijection bijections , into onto and even odd functions ??

No They are irrelevant for CAT.