The Classic Proof of the Sum Formula Using Mathematical Induction
Demonstrating the proof that 1 + 2 + ... + n = n(n+1)/2 through induction, showcasing one of the most fundamental and classic applications of mathematical induction in just 40 seconds.

1Psi3Colour
78.4K views • Feb 25, 2023

About this video
Prove 1+2+...+n = n(n+1)/2 using induction is the most classic proof by induction in mathematics. Let's see how it goes in just 40 seconds! #induction #maths #mathematics #math
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🔥Subscribe to 1Psi3Colour:
https://www.youtube.com/c/1Psi3Colour?sub_confrimation=1
💥Check out these videos:
The integral everyone should know: https://youtu.be/vu5Q7vBsopA
A deceivingly easy Putnam problem!: https://youtu.be/KA0YThPbaGM
👉Check out these playlists:
Math Olympiad Problems from Different Countries:
https://youtube.com/playlist?list=PLfdSlpebuC3Y2w4Pw2ftY1YAB6eYb0HVh
Math Shorts: https://www.youtube.com/playlist?list=PLfdSlpebuC3ZdBZZlnGj1G0yPeY0KSa1h
Functional Equations:
https://www.youtube.com/playlist?list=PLfdSlpebuC3a2WmfoW9J-IgTQry0a4XuE
👉Suggest a problem: https://forms.gle/hTibrUKz7QNyqoC48
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Video Information
Views
78.4K
Likes
2.7K
Duration
0:40
Published
Feb 25, 2023
User Reviews
4.7
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