12: Fourier Solutions of Partial Differential Equations
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In this chapter, we use the series discussed in Chapter 11 to solve partial differential equations that arise in problems of mathematical physics.
- 12.1: The Heat Equation
- This section deals with the partial differential equation uₜ=a²uₓₓ, which arises in problems of conduction of heat.
- 12.2: The Wave Equation
- This section deals with the partial differential equation uₜₜ=a²uₓₓ, which arises in the problem of the vibrating string.
- 12.3: Laplace's Equation in Rectangular Coordinates
- This section deals with a partial differential equation that arises in steady state problems of heat conduction and potential theory.
- 12.4: Laplace's Equation in Polar Coordinates
- Previously, we solved boundary value problems for Laplace’s equation over a rectangle with sides parallel to the x,y -axes. Now we’ll consider boundary value problems for Laplace’s equation over regions with boundaries best described in terms of polar coordinates.