A circular loop carrying current lies in the yz plane with its axis along the x-axis. a) Evaluate the line integral along the axis of the loop from to.∫∙=―1=+1

b) Show the result of the integral when. Note this result can be related to ∫∙→∞Ampere's law by closing the curve of integration with a semicircle of radius on which 1 for very large ≈01.