From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/1465 Path: news.gmane.org!not-for-mail From: "M.M. Mawanda" Newsgroups: gmane.science.mathematics.categories Subject: stupid question? Date: Wed, 29 Mar 2000 19:36:41 +0200 Message-ID: <3.0.1.32.20000329193641.00694528@thebe.nul.ls> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" X-Trace: ger.gmane.org 1241017849 31368 80.91.229.2 (29 Apr 2009 15:10:49 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 29 Apr 2009 15:10:49 +0000 (UTC) To: cat-dist@mta.ca Original-X-From: rrosebru@mta.ca Wed Mar 29 15:54:59 2000 -0400 Original-Received: (from Majordom@localhost) by mailserv.mta.ca (8.9.3/8.9.3) id PAA10293 for categories-list; Wed, 29 Mar 2000 15:47:16 -0400 (AST) X-Authentication-Warning: mailserv.mta.ca: Majordom set sender to cat-dist@mta.ca using -f X-Received: from zent.mta.ca (zent.mta.ca [138.73.101.4]) by mailserv.mta.ca (8.9.3/8.9.3) with SMTP id NAA21877 for ; Wed, 29 Mar 2000 13:34:53 -0400 (AST) X-Received: FROM thebe.nul.ls BY zent.mta.ca ; Wed Mar 29 13:35:43 2000 X-Received: from mawanda.nul.ls ([196.24.2.251]) by thebe.nul.ls (8.8.7/8.8.7) with SMTP id TAA02762 for ; Wed, 29 Mar 2000 19:31:08 +0200 X-Sender: mmmawanda@thebe.nul.ls X-Mailer: Windows Eudora Light Version 3.0.1 (32) Original-Sender: cat-dist@mta.ca Precedence: bulk Original-Lines: 8 Xref: news.gmane.org gmane.science.mathematics.categories:1465 Archived-At: I have been asked the following question: Is it true that any function defined in a real number closed interval [a,b] (there is not a hypothesis of continuity) is bounded in an open subinterval (c,d) of [a,b]? My spontaneous was NO. Unfortunately I cannot find a counter-example to disapproved my answer. Can someone help.