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3 votes
0 answers
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Relating Brachistochrone problem to Fermat's principle of least time [closed]

When I came across the Brachistochrone problem, my teacher said we could relate it to Fermat's principle of least time. So, we could make many glass slabs of high $\mathrm dx$, and every slab has a ...
AANT's user avatar
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0 votes
1 answer
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Fermat least time and snell's law for multiple layers of medium

I am reading a differential equation book that discusses the Brachistochrone problem. The book discusses Bernoulli's solution that uses Snell's law. The book says that a ray would follow the fastest ...
Amin Nasim saravi's user avatar