The equation R = (t 2 +4)ejt/10 defines the position of a point. In which direction is

The equation R = (t 2 +4)e−jπt/10 defines the position of a point. In which direction is the position vector rotating? Where is the point located when t = 0? What is the next value t can have if the orientation of the position vector is to be the same as it is when t = 0? What is the displacement from the first position of the point to the second?