Find and plot the magnetic flux density as a function of radius for the concentric hollow cylinders using MATLAB. The currents are I(a)=4*I and I(b)=-2*I. A positive current flows into the page.

Clarification: You can treat this as a hollow coaxial line. Current on the surface of inner conductor is 4I going into the page (positive current flows into the page) or is in negative z direction while current on outer conductor surface is 2I in the reverse direction or positive Z- direction. I is the general current. There is no third conductor.

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