In spherical coordinates, the 3-dimensional form of
Chapter 13, Problem 13.1.51(choose chapter or problem)
In spherical coordinates, the 3-dimensional form of Helmholtzs partial differential equation is where the Laplacian is given in (2). Proceed as in Example 1 but use and the separation constant to show that the radial dependence of the solution u is define by the equation . Solve this differential equation. [Hint: See in Exercises 6.4.]
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