Recent content by milos

  1. M

    Graduate Most elegant proof of Arctan(x) + Arctan(1/x)

    but -1 belongs to that domain and result is between -pi/2 and pi/2; there is nothing wrong with arctg(-1)+arctg(1/-1)=-pi/2 ! thus,arctg(x)+arctg(1/x)=sgn(x)*pi/2
  2. M

    Graduate Most elegant proof of Arctan(x) + Arctan(1/x)

    "arc tan has to be set a domain, which you are out of." What domain?Are you sure about this?
  3. M

    Graduate Most elegant proof of Arctan(x) + Arctan(1/x)

    arctg(x)+arctg(1/x)=sgn(x)*pi/2:confused: