If f(x + iy) = u(x,y) + i v(x, y) is analytic, then u and v are harmonic, i.e. u_xx + u_yy = 0 and v_xx + v_yy = 0.
Replying to @rahulgoyal1376 @diff_eq
So very nearly true, though!
12:54 PM - 26 Feb 2020
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