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--- math121b:midterm2 [2020/04/11 19:01]
pzhou [3. Bessel Function (30 points)]
+++ math121b:midterm2 [2020/04/12 08:57]
pzhou [4. Solving PDE with separation of variables (30 points)]
@@ Line 63: / Line 63: @@
  $u(0, \theta) = \cos^2(\theta).$
+Hint: you may find the following formula useful
+ $\cos(2\theta) = \cos^2(\theta) - \sin^2(\theta) = 2 \cos^2 \theta - 1.$

Lecture Notes