Question: Harmonic Functions, Complex Plane. Look for a function f(x,y) on the upper plane (Im(z)>0): The function takes value -1 when x +

 Harmonic Functions, Complex Plane.

Look for a function f(x,y) on the upper plane (Im(z)>0): The function takes value -1 when x<-1 (on the real axis), 0 when -11.

Evaluate the function for z=i, then determine limit f(1+iy) for y—> +∞

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