It is a series of complex integrals as shown below, denoted by version B.[br] A: Integration on a circle, B: Integration on a line/arc, C: Integration on any parametrized curve.[br]1. set the function using the valuable z, such as f(z)=z^2[br]2. set the path as follows. line is 'Segment', arc is 'CircumCircular arc ' of GeoGebra command[br] path=start point, segment/arc, point, segment/arc,...,end point[br]3. Click the Initialize button[br]4.Set options if necessary[br] mratio:magnifying ratio of the arrows of the function, delta:division interval, [br] Max:maximum number of division[br][br]For further informaion please watch this Video.[br]https://www.youtube.com/playlist?list=PLmEX7-TmxuoI5UsSuDXffEOMlgKZ-ZXXg