Intro to FOURIER SERIES: The Big Idea

Comments · 282

• ST

  @starshipx1282 · 5 years ago

  May the soul of Fourier subscribe to your channel

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• AB

  @abiglug · 1 year ago

  You literally just summarized like a month's worth of my second-year calculus lectures and made it infinitely more clear than my prof

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• AT

  @atan5091 · 4 years ago

  Finally a video which doesn't assume the student knows eigenvalues

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• TH

  @thomascotton1959 · 3 years ago

  I don’t usually comment on YouTube but I’m a 2nd year physics student and I have to say you are the best source of maths help on the entire internet

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• RV

  @rvmishra9881 · 5 years ago

  Another JEM on YouTube after 3B1B .... Beautiful 💞💓

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• BE

  @Bestcuriosity_1 · 5 years ago

  Real teacher teaches hardest concept in easiest &nbsp;simplest &nbsp;way possible <br><br>and. I found &nbsp;you are the one who does beautifully <br><br> Thankyou sir for giving such insight which &nbsp;we never thought possible &nbsp;without you <br><br>&quot;Love and huge respect from INDIA &quot;

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• PE

  @PeterJonesonline · 4 years ago

  Fourier series is half the truth of the universe.

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• WI

  @Willtedwards · 6 months ago

  You are the yin to 3B1B Yang. You focus on technical detail over big picture conceptual stuff. For many including myself this is much appreciated.

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• CH

  @Chalisque · 4 years ago

  For those wondering why we need cosine as well as sine, one way of seeing this is to first observe that any function f(x) can be written as a sum of an even function and an odd function:<br>f(x) = even(x) + odd(x)<br>where<br>even(x) = 1/2 (f(x) + f(-x))<br>odd(x) = 1/2 (f(x) - f(-x))<br><br>Now the sin(nx) terms approximate the odd part (as sin(nx) is always odd, a sum of them will be odd)<br>and the cos(nx) terms approximate the even part (as a sum of even functions is even)<br>the all we need is a constant offset as the average value of sin(x) or cos(x) over [0,2pi] is zero.

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• YU

  @Yupppi · 4 years ago

  This is becoming my favourite math channel to extend the current knowledge with subjects that interest me. And youtube algorithm deserves a hats off as well. It just suggested your fourier series video series where finally it&apos;s not just introduction of what fourier does, but explaining how to use it or approach it. Like giving instructions to how to use a hammer to actually nail something.

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• LE

  @leahwanjiru2269 · 2 years ago

  Thank you my esteemed professor for making my Fourier class smooth......big up from Kenya

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• EL

  @elekikyu3915 · 3 years ago

  Watching this video brings me back to my university days taking Applies Physics - keep &apos;em coming!

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