CBSE 12th exam is also one of the toughest exam after 10. And Maths Paper is one of the toughest paper students expect. And this too happens in reality. Calculus is Limit of Sum, Maxima and Minima application problems, Application of Integrals and Properties of Definite Integrals are mainly the topics to focus on. As said earlier, one must be skilled in translating the equations into their plots, which can be acquired only through practice.
In Matrices and Determinants, Matrix Method, Inverse of a Square matrix and Properties of Determinants are very significant. Know the row-column transformation problems well. One step wrong in them could make the blunder.
Other important topics include the Concept of line and plane in 3D as well as the Bayes Theorem in Probability.
While preparing for the Class 12 CBSE Maths, it would be better to note down all the important formula and in the case of Calculus, the most important graphs. One can also note down the most frequent type of questions. This will prove to be very easy during the final days of preparation.
Solve the miscellaneous solved and unsolved problems with the help of formulas. Then solve the sample papers. Remember, first you should have knowledge of the NCERT books completely. Only then move to reference books.
Do not just learn by heart the formula. Apply them as well. Otherwise, the memorized formulas would be of no use.
To score the best mark in CBSE 12 Maths, it is very important to write down every step in a descriptive way.