3. In parametric form

Representing the circle parametrically is quite simple. Recall that for a circle centered at the origin, the pair of equations [Maple Math] describe a circle of radius [Maple Math] as [Maple Math] varies from 0 to [Maple Math] . If we want to move the center from the origin, all we have to do is add the appropriate constant to the [Maple Math] and [Maple Math] coordinates.

> plot([2+3*cos(theta),1+3*sin(theta),theta=0..2*Pi], scaling=constrained);