Find the smallest positive integer solution (x,y)(x, y)(x,y) to the Pell equation x2−2y2=1x^2 - 2y^2 = 1x2−2y2=1.
(1,0)(1, 0)(1,0)
(3,2)(3, 2)(3,2)
(5,3)(5, 3)(5,3)
(2,1)(2, 1)(2,1)