1. The problem statement, all variables and given/known data Find x(t), y(t) so that the point goes around the circle (x-1)^2 + (y-3)^2 = 4 with speed 1. 2. Relevant equations I know that the center of the circle is (1,3) and that the radius of the circle is 4. 3. The attempt at a solution Well, I'm really confused by what the author means by "speed". I know it's |v| (v being the velocity), but I still don't get what he is asking for. I know I need to find parametric equations x(t) and y(t) which, when combined, would give the equation of the circle, but I don't know how to work backwards like that. integration? this shouldn't be this hard, I'm just being retarded, sorry.