In the theory associated with the magnetic field due to an electric current, the expression is found.

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In the theory associated with the magnetic field due to an electric current, the expression


is found. By expanding (a2 + x 2)−1/2, find the first three nonzero terms that could be used to approximate the given expression.

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Basic Technical Mathematics

ISBN: 9780137529896

12th Edition

Authors: Allyn J. Washington, Richard Evans

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