Did you forget to multiply the 1/2 for your final answer of (even) a_n at 15:45 In my calculation I got 2 / m^2 (pi)^2 [1-(-1)^n] --> in the video it says 4 not 2
@daniel_an
5 жыл бұрын
Ah! I did. Thanks for the correction.
@gorantlakarthik2709
3 жыл бұрын
The explanation was very nice. The doubts clarification was on whole another level. looking forward for more "MATHS " stuff like these. frankly not even faculty from our clg explains half good as you sir. i'm glad i came to know abiut you sir.
@shofibahalwan402
5 жыл бұрын
Thank you!!! First 3 minutes and found what I was looking for!!
@dhruvj73
3 жыл бұрын
Do you know that Sine cosine were used in atleast 12k BCE book called "Surya Siddhanta", which is an astronimy master' book from ancient India. Here is a link you should check out: @
@dhruvj73
3 жыл бұрын
kzitem.info/news/bejne/on-rsamPk1-Tl20
@elliotskunk
Жыл бұрын
this all makes nice sense except for at 19:21 the sin(....) = -(-1)^m -at the moment i dont quite see where this comes from
@daniel_an
Жыл бұрын
cos(n pi) alternates values between 1 (for n even) and -1 (for n odd). So it is equal to (-1)^n
@ryujinryuk
6 жыл бұрын
isnt it supposed to be 2nxpi/4 for the cos angle ?
@esaiperez6302
Жыл бұрын
Bless you sir
@shafayetkhan6027
4 жыл бұрын
nathan makes sense?
@mondlimthombeni1873
3 жыл бұрын
For a_0 you got 7 and how did you get 7/2 and why?
@daniel_an
3 жыл бұрын
See equation 3 in en.wikipedia.org/wiki/Fourier_series . You have to divide by 2.
@KazisCollection
6 жыл бұрын
Why is it 2/4 for a0?
@KazisCollection
6 жыл бұрын
Apparently, I need to watch the whole video before commenting.
@daniel_an
6 жыл бұрын
It's 2/L and L=4 because the function is defined for [0,4]. Now, your textbook (or the professor) may have a0 to have 1/L instead. That is because the definition of a_0 is different (and off by a factor of 2) in your textbook. It's a bit confusing, but sadly there are two different conventions for Fourier series that are being used.
@randomthing4156
4 жыл бұрын
@@daniel_an Basically both are correct?
@daniel_an
4 жыл бұрын
@@randomthing4156 Yes. They are using different orthonormal function basis. They both produce series that converge to the original function.
@Pommes736
4 жыл бұрын
Students these days... the questions he asked were so dumb, he should obviously have never been allowed to pass whatever math course he was visiting before
@blackoutemzz2674
3 жыл бұрын
Chill dude. No1 is smart. We all have a weakness, even stupid questions are important 😂👌
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