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TomLikesPhysics
 2 years ago
I need to show that the ln of the absolute value of x (a 2d vector) is a harmonic function which means that the laplace operator of that function gives 0 for all x. Somehow it does not work. What am I doing wrong? You can see my calculation on the picture.
TomLikesPhysics
 2 years ago
I need to show that the ln of the absolute value of x (a 2d vector) is a harmonic function which means that the laplace operator of that function gives 0 for all x. Somehow it does not work. What am I doing wrong? You can see my calculation on the picture.

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domu
 2 years ago
Best ResponseYou've already chosen the best response.0I looked at your work and my suggestion would be to switch to polar coordinates and run the algebra one more time. It'll be easy to work with then
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