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But What Is a Fourier Series? From Heat Flow to Drawing With Circles

But What Is a Fourier Series? From Heat Flow to Drawing With Circles

3Blue1Brown via YouTube Direct link

- The heat equation

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- The heat equation

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But What Is a Fourier Series? From Heat Flow to Drawing With Circles

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  1. 1 Small correction: at , all the exponents should have a pi^2 in them.
  2. 2 - Drawing with circles
  3. 3 - The heat equation
  4. 4 - Interpreting infinite function sums
  5. 5 - Trig in the complex plane
  6. 6 - Summing complex exponentials
  7. 7 - Example: The step function
  8. 8 - Conclusion

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