Sum of first n odd numbers | Visual mathematics |

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Short animation about the sum of first n odd numbers.

here is an algebraic proof:

The first n odd natural numbers are 1, 3, 5, ... 2n-1. This forms an arithmetic progression with first term 1, common difference 2 and last term (2n-1).

The sum is given by S = 1+3+5+...+(2n-1).
Using S = n (First term + Last term)/2,
we get S = n (1+2n-1)/2,
which simplifies to S = n^2.

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Overall render time: ~ 8 hours

Programs used:

- Cinema 4D (3D animation)

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Music:

CLAUDE DEBUSSY: CLAIR DE LUNE
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Really beautiful animations. Added you to my featured channels :)

Mathologer
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I think I've been so conditioned throughout school to think of maths as something stressful and anxiety inducing, it's such a pleasant feeling to watch a maths video that is so calm.

kaylastarr
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So quiet calm and peace full! It's like I'm meditating as I'm learning!!!!

joeroman
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Props to the Clair de Lune. Debussy rocks!

jsmunroe
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there’s a lot of scenarios that claire de lune fits but i gotta say i didn’t expect moving cubes to be one of them

sciencepenguin
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The connection is so crystal clear from the thumbnail there is no need to click. Good for education, bad for views.

feridunabi
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I like how you synchronized the animation to the music

joshinils
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I firstly starting seeing your video. It awesome and these video is 😘😘😘😘😘😘😘. It has clear my all the doubts

naynapatel
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This blew my mind, and was extremely visually satisfying. Well done!

alectriciti
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This looked so simple, I felt silly I hadn't realized it sooner! Truly beautiful animations.

jasonli
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0:57
me: so now what?
video: 1:07
me: *head explodes*

LeviathanKoda
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How do you have all these beautiful visual proofs? This is amazing stuff! I'm always taken aback by how awesome your videos are.

ozzyfromspace
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That's interesting and I'm glad I saw this video because back in middle school, I wanted to figure out the relationship between how square numbers increase. I realized they increased by odd numbers every time and now I see why. Thank you for this

garrettdennis
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It deserves MUCH MORE views! (and even Mathologer approves!) :)

dejnol
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Love your animations and background music too.

yamansanghavi
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As a guy learning programming and math...this is fascinating!

wajeehdaouk
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my God, please keep doing this amazing stuff of anything in maths ... I'm pretty sure most of humans would prefer the basics ...

Maisonier
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Mahn! was learning to code with simple math problems when I just randomly found out that sum of first n odd numbers is square of that number. And I thought to myself "wow! I am an amazing genius". Then I googled and found this.

whatcoconut
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Very cool. It is said that young Gauss was asked a related problem in math school and to the surprise of the teacher and his fellow students generally solved it. Just like me when I was 23 and didn't knew about this story yet. It is the question to what the series 1, 2, 3, 4, ..., n sums up to. The answer I found through trial and error was (n+1)*n/2. Multiply it out and you'll see the striking similarity with the solution in the video: (n^2+n)/2.

steffen
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you realise guys that if this was the teaching method we will had at least double the number of math geniuses on the planet right?no joking

valuevalue