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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.
 9 months ago
 9 months 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.
 9 months ago
 9 months ago

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domuBest ResponseYou've already chosen the best response.0
I 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
 9 months ago
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