Brahmagupta's problem

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This problem was given in India by the mathematician Brahmagupta in 628 AD in his treatise Brahma Sputa Siddhanta:

solve the Pell's equation

for integers .

Brahmagupta gave the smallest solution as

.

See also[edit]

External links[edit]

Weisstein, Eric W. "Brahmagupta's Problem". MathWorld.