Assertion :A normal is drawn at a point P(x,y) of a curve. It meets the x-axis and the y-axis in point A and B, respectively, such that 1OA+1OB=1, where O is the origin. The equation of such a curve passing through (5,4) is (x−1)2+(y−1)2=25 Reason: OA=x+ydydx and OB=x+ydydxdydx