Obtain expression (4). Sec. t.:n. as a solution of the
Chapter 0, Problem 12.14(choose chapter or problem)
Obtain expression (4). Sec. t.:n. as a solution of the Dirichlet problem for the region exterior to a circle (fig. 196). To show that 11(r. - 0) is harmonic when 11 (r. 0) is harmonic. use the polar form r 211,,.(r. 0) + r11,(r, 0) + ll1111(r.O) = 0 of Laplaces equation.
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