Brahmagupta's problem

This problem was given in India by the mathematician Brahmagupta in 628 AD in his treatise Brahma Sputa Siddhanta: Solve the Pell's equation

$x^2-92y^2=1$

for integers $x,y>0$.

Brahmagupta gave the smallest solution as

$(x,y)=(1151,120)$.

See also

• Brahmagupta
• Indian mathematics
• List of Indian mathematicians
• Pell's equation
• Indeterminate equation
• Diophantine equation

External links

Weisstein, Eric W.. "Brahmagupta's Problem". http://mathworld.wolfram.com/BrahmaguptasProblem.html.