1st of all ask ur self this questions:
have i got information about what type of questions are asked in iit in each topic ?
do i have enough knowledge and clearity of understanding to tackle the questions that have been asked in exams like the aieee?
if ur answers to these questions is no , then sorry mate u don't
need J.D LEE
u need to study ur course book thouroughly first ,
(but only NCERT is inadequate coz it doesn't have enough information and problems . Ucan use a book by pradeep pub.
)
however if ur answer is yes and u want to take ur preparation to the nxt level ,use jd lee ,it's a very good book ,has very good presentation, and u are sure to clear all ur doubts.
however remember the condition.
best of luck for ur exams!!!!