Question

explain fermat's theorem????​

Answer 1

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Fermat’s Theorem:-

• The principle of least time: Light always takes the quickest path between any two points (which may not be the shortest path).

• Rectilinear propagation of light and the law of reflection  [∠i=∠r] can be validated by Fermat’s principle of least time.

Answer 2

Answer:

Fermat's theorem, also known as Fermat's little theorem andFermat's primality test, in number theory, the statement, first given in 1640 by French mathematician Pierre deFermat, that for any prime number p and any integer a such that p does not divide a (the pair are relatively prime), p divides exactly into ap − a.