# Partial Diff. Equation #3

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Suppose that u(x,t) satisfies the diffusion equation... for 0<x<L and t>0, and the Robin boundary conditions... where k, L, a0 and aL are all positive constants. Show that... is a decreasing function of t.

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#### Solution Summary

This solution is comprised of a detailed explanation to show that... is a decreasing function of t.

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