That's not exactly truth. I was studying maths and throw many questions in many other forums.
I feel compassion for the other forums users
How did they respond to your questions?
I was not visiting donation coder for months.
We noticed, don't worry...
But I like a lot very much you remember me as a person able to ask.
Well, you (and another user) ask a lot of questions that can easily be answered by Googling your question first (you can use Spanish there, if you prefer), and after studying and further investigating the results, you can optionally come back here to verify the choices you made. And if you do, listen to our advice. Usually you don't (seem to) take much advice given here.
Lesson no. 1: Google wants to be your friend, use it for what it's good at: Provide answers, even to silly questions, as opposed to most (somewhat) intelligent people.