A harmonic function, Let (r,θ) be the polar coordinate, show

A harmonic function

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Let (r,θ) be the polar coordinate, show that Δu=u_rr+1/r∗u_r+1/r²∗u_θθ.In particular, if u=f(r) is a harmonic function, show that u=c1logr+c2

Reference no: EM13896274

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