cris Master | Next Rank: 500 Posts View User Profile Posts: 128 Joined: Sat Nov 17, 2007 11:59 am Thanked: 1 times DS by cris » Sat Feb 02, 2008 4:50 am Is m+z>0 ? 1) m - 3z > 0 2) 4z - m > 0 Top Quote