I cannot tell you how to remember them as that is known to you by your "BRAIN".
Well I can tell you methods by which you can have an easy way to clear JEE.
See to remember everything well and Thorough first you should have the following points in your Purse:
1)You should be proper to Timetable. Means have a discipline in life.
2)You should keep some special seperate notes that you do think will be useful at the time of JEE preparations.
3)Notes must be good and Well maintained and should be kept in a place where you find them easily than just Dump it any place you want them to be in.
4)Follow some good level of Books which can be given by me or anyone else IIT based.
5)Try studying with Concentration and study sincerely. If yo think you cannot do that then get up in the morning as early as say 6.00am and then do Yoga/meditation.
6)Plan your studies well enough during the time of exams.
Here are some book that are good for JEE point of View: Maths: 1)RD Sharma 2)ML Khanna