6. Verify that the given functions are harmonic in a domain D not containing the origin: (a) u(r, 0) = r³ cos 30 (b) u(r
Posted: Tue Jun 07, 2022 7:03 am
6. Verify that the given functions are harmonic in a domain D not containing the origin: (a) u(r, 0) = r³ cos 30 (b) u(r, 0) = 10r²-sin 20 7-2