The Laplace operator is defined by = xx + yy . A function (x,

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The Laplace operator is defined by Δƒ = ƒxx + ƒyy. A function ƒ(x, y) satisfying the Laplace equation Δƒ = 0 is called harmonic. A function ƒ(x, y) is called radial if ƒ(x, y) = g(r), where r = √x+ y2.

Use Eq. (12) to prove that in polar coordinates (r, θ),

2x + fx a + fy a y ar

1 Af = frr + 2f00+ - fr 1 21

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Related Book For  answer-question

Calculus

ISBN: 9781319055844

4th Edition

Authors: Jon Rogawski, Colin Adams, Robert Franzosa

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