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I have some difficulties in understanding to use the method of images to solve Poisson's/Laplace's equation with boundary values.

I understand that the Uniqueness theorem(s) enables this method. In this method we use image charges and setup a different configuration without affecting the given boundary values andrho(the charge density/distribution) where it is easy to calculate the potential in the region of interest. Uniqueness theorem guarantees that the potential we thus determine is same as the potential due to the original configuration. This would mean that we shall NOT put any of the image charges in the region where we want to determine the potential. For, it would then change rho and we would be dealing with a different problem.

The difficulty arises when we are to determine the potential in all of space with the boundary conditions and rho given. This would mean that we cannot put the image charges anywhere in space. How then would be able to solve this problem using the method of images?:uhh:

http://en.wikipedia.org/wiki/Method_of_image_charges" [Broken] is Wikipedia's article on Method of Images if you want to have a look

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# Method of Images problem

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