
Approximation to square roots
Posted:
Jan 16, 2014 8:33 PM


Is this a known theorem? "For each N,there exists a rational x / y such that the difference x / y  Sqr(N) is less than 1 / [2N^2.Sqr(N)]. x, y is a solution of Pell´s equation x^2 + N.y^2 = 1 ". Ludovicus

