Sum of Odd Cubes is Triangular (visual proof without words)

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This is a short, animated visual proof of the formula that computes that sum of the first n odd cubes by representing cubes as n copies of an nxn array.

Here are some related visual proofs about the sum formulas:

#math #manim​ #mathvideo​​ #sumofcubes​ #oddcubes #mtbos​ #manim​ #animation​ #theorem​ #pww​ #proofwithoutwords​ #visualproof​ #proof​ #iteachmath #finitesums #discretemath #sum #induction #triangularnumbers #triangles

To learn more about animating with manim, check out:
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it's amazing and beautiful. thanks!

math_travel
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Neat! I knew the opposite would work at least for Mersenne-prime indices!

wyattstevens
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This is the most clever one I've ever seen!

BillGreenAZ
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thank you so much, i watched all your videos, hope you upload more

tuanhungang
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Fun fact: the sum of consecutive odd numbers is always a square

coder
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So cool! Math laws is like hidden truths tt God wants to let His children discover

aclp