<s>[INST] The area of a rectangle can be embedded into a square of side length equal to the diagonal of the rectangle. As the side length of the square (diagonal of the rectangle) increases, the ratio of the area of the rectangle to the area of the square increases and exceeds that of a golden rectangle, as a form of this optimum varies. Given, a square side length = the rectangle’s diagonal = x, as x → ∞, (x + y)/x, (x - y)/x and y/x approach any number of irrational values. However, there are optimal irrational values that the ratio approaches the golden ratio (as it is the optimum), such that the ratio ((x + y)/x  (x - y)/x) is maximum. Exhibit these optimum irrational values that produce the golden ratio.[/INST]