Cse the Poisson integral transform (I). Sec. 135. to derive the expression \l(.r.y)=~arctan[ l-.r 2 -/ ] (O,:::arctanf~;T) ;T (.r - I )2 + ( y - I )2 - I for the electrostatic potential interior to a cylinder x 2 + y2 = I when V = I on the tirst quadram (.\ > 0. y > 0) of the cylindrical surface and V = 0 on the rest of that surface. Also. point out why I - \I is the solution to Exercise 8. Sec. 123.

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