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Unformatted text preview: now turn z into r. .. 3.28 3.35 Here, it's just the sum of the three line integrals over the line segments: Assignment solutions Page 2 3.43 This goes as 1/r in the limit r>0, so we know that it behaves like a point chargei.e. a delta function of charge densityat the origin. Assignment solutions Page 3 V is the product of two scalar functions, one of which is 1/r. But we don't have an identicy for the Laplacian of (fg) on the inside cover of the book. What we do have is On the RHS we have the divergence of a scalar times a vector function. We have an identity for that: Using this, with Assignment solutions Page 4...
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 Spring '09
 Vector Space, Magnetism, Assignment solutions Page

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