APM346-2015F > Textbook errors

Equation 6.4.12

(1/1)

Bruce Wu:
http://www.math.toronto.edu/courses/apm346h1/20159/PDE-textbook/Chapter6/S6.4.html#mjx-eqn-eq-6.4.12

We are already evaluating $u$ at $r=a$. So after the summation sign it should be $a^n$ instead of $r^n$

Correct

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