re: My professor just told me my Midterm has 2 questions.

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My professor just told me my Midterm has 2 questions.
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This, I still get the goosebumps from a PDE problem using fourier series by hand in 90 minutes.
Math 4038?

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I didn't hate Fourier Series too much, but remembering some of the formulas that made simplifying the problems got me twisted some time. I took something called introduction to perturbation techniques and asymptotic expansions my last year.

we learned something called matched asymptotic solutions to boundary layer problems (different than BVP) that was the most confusing and hardest thing i've ever done. i think the teacher gave me a passing grade in the end because he thought anyone who stuck through it and made an effort should have passed - it was an elective so sort of dug our own hole signing up for that.