APM346-2015F > Textbook errors
Equation 6.5.3
(1/1)
Bruce Wu:
http://www.math.toronto.edu/courses/apm346h1/20159/PDE-textbook/Chapter6/S6.5.html#mjx-eqn-eq-6.5.3
The $r$ in front of the $\sin$ should not be there.
Correct
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