This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Discontinuity removable.eps. en Maksim page en Made by me with matlab Source code function discontinuity set up the plotting window thickline thinline arrowsize arrowtype fs circrad picture length XX length figure clf hold on axis equal axis off axespoints thinline thickline arrowsize arrowtype circrad fs saveas gcf