From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,a9b0810d3106d9b8 X-Google-NewGroupId: yes X-Google-Attributes: gida07f3367d7,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news2.google.com!news2.google.com!Xl.tags.giganews.com!border1.nntp.dca.giganews.com!nntp.giganews.com!local2.nntp.dca.giganews.com!news.giganews.com.POSTED!not-for-mail NNTP-Posting-Date: Thu, 28 Apr 2011 05:24:57 -0500 From: Peter C. Chapin Newsgroups: comp.lang.ada Subject: Re: Fun with C Date: Thu, 28 Apr 2011 06:24:45 -0400 Organization: Vermont Technical College Message-ID: References: <117x5uepxzqrn$.zu65rz3wdey9.dlg@40tude.net> <10wrcep2z88z3$.1q3jmf2y5a0qn.dlg@40tude.net> <356b1c5c-9b6e-488b-a31a-6e1d15082f2c@k22g2000yqh.googlegroups.com> <5l0ijm901fhp$.3f2xu562o6ri$.dlg@40tude.net> <724c7fd3-046b-42ee-9dff-5606b8ca1048@dr5g2000vbb.googlegroups.com> <1ttincqpi28n0.1no79n6bocser.dlg@40tude.net> X-Newsreader: Forte Agent 6.00/32.1186 trialware MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Usenet-Provider: http://www.giganews.com X-Trace: sv3-RUui1W9DcIkZVRzD20ZYhlGaDM1Kmwcgklr1RDCOlL/XRmSgAOzF60rmb3qgEBHX9tggPU+f/k7skRV!UHUoVn5QOy2jOkchpM+DR3eZNVWCPA3jqNc01ZUTtRjVTD6gVQQyn8yzBH9tw+ZvRhD1Rcc= X-Complaints-To: abuse@giganews.com X-DMCA-Notifications: http://www.giganews.com/info/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 X-Original-Bytes: 2162 Xref: g2news2.google.com comp.lang.ada:20041 Date: 2011-04-28T06:24:45-04:00 List-Id: On Thu, 28 Apr 2011 09:41:51 +0200, "Dmitry A. Kazakov" wrote: >> The above equation does not define the spring mechanics. > >It is not an equation, it is a solution of some second-order differential >equation [equations themselves can be linear or not, which is unrelated to >the issue]. It's not unrelated to the issue at all. A system is called a "linear system" because it is described by a linear differential equation. That's a matter of definitition. Of course you can use the term "linear system" to mean something else, but that will make it hard for you to communicate with others... as evidenced by this thread. Peter