A Boundary Integral Equation with the Generalized Neumann Kernel for a Certain Class of Mixed Boundary Value Problem

Figure 5

The absolute error |𝑢(𝑧)−𝑢_𝑛(𝑧)| for the entire domain obtained with 𝑛=64 for Example 6.1 (a) and with 𝑛=256 for Example 6.2 (b).

(a)  

(b)