While solving a book there was a statement that prove that shortest distance between two points is always a straight line by
- Geometry
- Coordinate geometry
I was unable to prove it.
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Have a look here: https://en.wikipedia.org/wiki/Calculus_of_variations#Example – Zima Jun 20 '23 at 13:39
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1What is this book about? – Carlos Adir Jun 20 '23 at 13:50
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I wonder if the ancient Greeks proved this using Euclidean geometry and without calculus – زكريا حسناوي Jun 20 '23 at 17:22