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Chapter 6-7:
Solve Laplace eq. with spherical symmetry: 6.1.4, 6.1.6, 
Solve Laplace eq. for a disc. with angular data: 6.3.2, 6.3.3,
Find Green's function for a simple geometry: 7.4.1, 7.4.9, 7.4.15,
Show that the integral of Laplace u, is u(0): 7.2.2 
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Chapter 12:
Distributions: Derivative, Delta function. 12.1.6,
                12.1.7, 12.1.10, 12.1.2, Ex 12.1.7
Source functions with distributions: 12.2.2, 12.2.5, 12.2.7,
Fourier transforms: 12.3.1, 12.3.2, 12.3.4b, 12.3.5a,
Solving PDE with Fourier transform: 12.4.1, 12.4.3