my self Ajay singh( AS) Author of "DOOR TO IIT" Book i have taught 30k+students in classroom program in various reputed coaching institute in kota " DOOR TO IIT" mathematics book which have unique concept to learn mathematics for JEE my many students got top rank in IIT JEE SURAJ (rank 28th IIT JEE 2018 ), YATISH AGRAWAL (Rank 12th IIT JEE 2017 ) My desire to learn and spread the information of this worldwide lingua has been the driving hotspot for me to seek after my vocation as a maths trainer. By god's grace and with the assistance of my precious ones, I have possessed the capacity to publish my first book Door to IIT on mathematics. I have truly trust that the right strategy assumes an essential job for progress, consequently, I began to heap all my insight in the setting of utilizing right techniques, representations, which currently has transformed into this book. Seven years of hands-on experience in dealing with IIT JEE students and curriculum. With a passion to teach creatively and constantly keep striving to improve the existing methods of teaching makes my job both satisfactory and challenging I am actually going to give you tricks: 1.The best trick is to eliminate options. You need to be rather smart and careful. Maybe try substituting values in the question and see if it makes sense. This actually is a very useful physics trick, for example try setting mass terms to infinity and zero and check the asymptotic behavior of the equation. 2.Try substituting the options into the question, and see if that makes sense. These are the most general tricks, there are more specific tricks related to different sections of mathematics, and question type. 3.we provide best study material, Assignment, worksheet, as DPP's, regular tests rank booster strategy etc. About "DOOR TO IIT" This book Mathematics for JEE (Mains & Advanced) is my gift to the aspirants of IIT jee who will surely be benefited by the methodology of this book along with the numerous questions given in every chapter, which are carefully picked from different question papers of various examinations. The solution of every question has a detailed explanation for easy understanding; all the latest questions have been incorporated to help the students know the latest pattern of the questions being asked in exams. In nutshell, I might want to state that this book is an endeavour to fill the craving to turn into an IITian. This book covers target questions alongside point by point solution. Practice sets based on the pattern of examination. Subjective questions with the best representation.