Theory and ExamplesThe one-dimensional heat equation If

Chapter 14, Problem 23AAE

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Problem 23AAE

Theory and Examples

The one-dimensional heat equation If w(x, t) represents the temperature at position x at time t in a uniform wire with perfectly insulated sides, then the partial derivatives wxx and wtsatisfy a differential equation of the form

This equation is called the one-dimensional heat equation. The value of the positive constant c2 is determined by the material from which the wire is made.

Find all solutions of the one-dimensional heat equation of the form where r is a constant.

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