440 CHAPTER. 11 • APPLICATIONS OF HARMONIC FUNCTIONS
y
(x, y)
----------,~--: -------E---------------------------
11 I \ ;:. ,., ..(^68 0) I^11 I ,' \ I ......... '.... .. ., .. J!8N
(^11) / \ '., .. ., 6.(JN- 1
, ' , \ .. .. .. ..
tilJ, ' • u 'IJ 2 ' \ '
I. ¢ = U(ti)
¢ = U(tj)
Figure 11.13 Boundary values for \I?.