# PDE-harmonic functions

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• January 12th 2010, 03:14 AM
tom007
PDE-harmonic functions
Let u be a harmonic function in $K(0,1) subset R^n, n>= 2$.
Prove that v is harmonic then on complement K(0,1), where v is given with the formula:
$v(x)= ||x||^{2n-1} u( \frac {x}{||x||^2 \;)}$

pls help! :)