I wish to ask that since I'm currently pursuing B.Tech 1st sem,will I be eligible to give improvement exam in 2013?I wish to give only in maths(passed all the subjects with 83%but want more marks in maths).And is it true that from next year in JEE MAINS all those who wish to give improvement exams will have to give it in all the subjects if they want their papers to be considered?Also when is the last date for improvement exam registration?I think I may have missed it :P Expecting an earnest reply,Thank you.