Hello, Euty, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are some pages that you might find helpful:
Limits in math functions is to put the arguments below and above the sum and products signs, not the integral sign. The limius should be after the integral sign so \limits should not be used. Dmcq (talk) 17:14, 2 April 2011 (UTC)[reply]
And in fact you don't normally need it even for products and sums either as they stick them in the right place without the use of \limits except in textstyle. I guess the ony use is the few cases where one rally does want a limit above or below the integral sign which can happen sometimes especially with multiple integrals. Dmcq (talk) 21:46, 2 April 2011 (UTC)[reply]
per the discussion with User:Tomoceusztakatiti, I am unblocking your account. Please keep in mind that since you are both using the same computers, you should refrain from participating on the same discussions. Thank you for your patience! -- Luktalk09:43, 25 January 2012 (UTC)[reply]