The vertex A.D.C of square oabc rectangle ADEF on the coordinate axis point F on AB point b.e area of ad = 0.5adef on graph with function y = 1 / X (x > 0)

The vertex A.D.C of square oabc rectangle ADEF on the coordinate axis point F on AB point b.e area of ad = 0.5adef on graph with function y = 1 / X (x > 0)

Let the coordinates of point B be B (a, b), because oabc is a square, so there is a = B. at the same time, if point B is on the curve of function y = 1 / X (x > 0), then there is a = b = 1. Ad = 0.5, if point E is on the curve of function y = 1 / X (x > 0), then there is C = 1 / 1.5. Let the area of ADEF be s, s = ad * de = 0.5 * (1 / 1.5) = 1 / 3