Math Forum http://mathforum.org/kb List of forum topics en tautology of conditions http://mathforum.org/kb/thread.jspa?messageID=7934798&tstart=0#7934798 I have lets]]> Dec 9, 2012 11:29:42 PM Dec 9, 2012 11:29:42 PM gregor.gololicic93@gmail.com 0