### Author Topic: Unbounded Terms  (Read 1005 times)

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##### Unbounded Terms
« on: March 19, 2018, 06:18:38 PM »
Why do we drop unbounded terms from solutions to PDE's? Specifically, in section 6.2, Laplace equation in half-strip:

$$Y''= \lambda Y$$

yields solution

$$Y=Ae^{-\sqrt{\lambda}y}+Be^{\sqrt{\lambda}y}$$

And then the second term is dropped because it is unbounded