arocks Master | Next Rank: 500 Posts View User Profile Posts: 127 Joined: Tue Oct 02, 2007 9:35 am Thanked: 1 times 1/[v(2x)+vx] - set10 Q20 by arocks » Sun Oct 07, 2007 5:25 am If x > 0, then 1/[v(2x)+vx] = A. 1/v(3x) B. 1/[2v(2x)] C. 1/(xv2) D. (v2-1)/vx E. (1+v2)/vx I got A. The OA is D... Pls. explain. Thanks. Top Quote