What is the minimum value of ax + by where xy = c2?
Q1. (b) If 2p is the perpendicular distance from the origin to the line x/a + y/b = 1, then a2 , 8p2 ,b2 are in :
(a) AP (b) GP (c) HP (d) none
Q1. (a) Prove that the line which makes an angle tan -15 with the axis of x and which cuts the y axis in the point (0,-5), passes through the point (1,0).