The line L passing through the fixed point P (2,1) teaches that the positive and half axis of X axis is at point a, the positive and half axis of intersecting Y axis is at point B, and O is the coordinate origin to find the minimum perimeter of triangle OAB?

The line L passing through the fixed point P (2,1) teaches that the positive and half axis of X axis is at point a, the positive and half axis of intersecting Y axis is at point B, and O is the coordinate origin to find the minimum perimeter of triangle OAB?

Points a (a, 0), B (0, b), 1 / (2-A) = (B-1) / (0-2), B = A / (A-2) -- - (1) the perimeter of OAB L = a + B + (a ^ 2 + B ^ 2) ^ (1 / 2) -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -