Математичний аналіз і диференціальні рівняння вивчаю САМ

Hello, dear friend! Great to be a member of this site. It is a little about myself: I am 43 years old. I live in Europe, I've married 2 years ago. I have 2 kids - a son, and the daughter. I live in a small town in east Europe. I'm working at the college. I just hope I am useful in one way here. My...