Unformatted text preview: x 2 ≥ 0 for all real numbers x ? Proof. Suppose not. Then for every real number x , x 2 < 0. In particular, plugging in x = 3, we would get 9 < 0, which is clearly false. This contradiction shows that for every real number x , x 2 ≥ 0....
View Full Document
This note was uploaded on 12/10/2011 for the course MHF 3202 taught by Professor Larson during the Fall '09 term at University of Florida.
- Fall '09