this is what i got
http://img705.imageshack.us/img705/8880/img021wu.jpg
and depending on what x is, it could be negative. if its length then its only pos+
its actually a good sign for me in my maths lec since it pauses the lecturer for a moment so that i can copy and catch up with the notes. Left hand lecturers always cover what they write. Its so irritating ><