Sir I am unable to understand maths of class 11 specially sequence series conic sections calculas…what will be the best lectures or suggestions to be excel in it ??
Take NCERT Text book and practice all the problems of the chapters which you are weak.
If you don’t understand any concept or problem try to ask your teacher or mentor if you are enrolled in EXPRTO. Clarify all your doubts on time. And increase the level of hardness of questions day by day. To get satisfaction in mathematics you have to solve a lot of problems.
Never look at solution without even thinking about problem. Think about the problem and get ideas to solve it. If you don’t have any idea then look up the solution.