Graph 4: This is a graph of the magnetic field lines of a cylindrical object of radius b made of permeable material with a hole of radius a in the center. Here, mu is 1000 so that alpha is 0.002691

Note: The step needs to be further decreased in order to alleviate the "tail" situation. In the mock run, the step was set to 0.009 which produced a more accurate graph but it took to long to create. Since alpha remained the same both times (for step=0.01 and step=0.009), I used this graph.