http://www.kaboodle.com/pg?pid=AAAAActukTwb7xDIcHmpYAAAAAAABvG7 http://www.kaboodle.com/reviews/login-56 <p><a href="http://www.kaboodle.com/reviews/login-56"><img align="left" border="0" src="http://www.kaboodle.com/hi/img/2/0/0/55/d/AAAAAvBAuPsAAAAAAFXRPg.png?v=1182599970000"/></a>Let be an matrix with entries in . A generalized inverse, denoted by , is an matrix with entries in , such that Examples * Let Then any matrix of the form where and , is...</p> algebra math Sat, 23 Jun 2007 04:59:29 PDT http://www.kaboodle.com/reviews/login-56 http://www.kaboodle.com/za/itemdetail?pid=AAAAActukTwb7xDIcHmpYAAAAAAABvG7&itemId=AAAAActukTwAAAAAABmoOw <p><a href="http://www.kaboodle.com/za/itemdetail?pid=AAAAActukTwb7xDIcHmpYAAAAAAABvG7&itemId=AAAAActukTwAAAAAABmoOw"><img align="left" border="0" src="http://www.kaboodle.com/hi/img/2/0/0/35/c/AAAAAhqPrsUAAAAAADXIbQ.png?v=1172547048000"/></a>作者： 来源：科学时报 发布时间：2007-2-26 23:29:29 | 科学及以其为基础的技术，在不断揭示客观世界和人类自身规律的同时，极大地提高了社会生产力，改变了...</p> news science Mon, 26 Feb 2007 19:30:45 PST http://www.kaboodle.com/za/itemdetail?pid=AAAAActukTwb7xDIcHmpYAAAAAAABvG7&itemId=AAAAActukTwAAAAAABmoOw http://www.kaboodle.com/za/itemdetail?pid=AAAAActukTwb7xDIcHmpYAAAAAAABvG7&itemId=AAAAActukTwAAAAAABVnrQ <p><a href="http://www.kaboodle.com/za/itemdetail?pid=AAAAActukTwb7xDIcHmpYAAAAAAABvG7&itemId=AAAAActukTwAAAAAABVnrQ"><img align="left" border="0" src="http://www.kaboodle.com/hi/img/2/0/0/2f/8/AAAAAo8-NU4AAAAAAC-I3g.jpg?v=1170651072000"/></a>NASA最佳火星照片揭晓 火星日落居首(组图)</p> mars nasa Sun, 04 Feb 2007 20:51:10 PST http://www.kaboodle.com/za/itemdetail?pid=AAAAActukTwb7xDIcHmpYAAAAAAABvG7&itemId=AAAAActukTwAAAAAABVnrQ http://www.kaboodle.com/reviews/the-advantages-of-a-rolling-foot-in-human-walking <p><a href="http://www.kaboodle.com/reviews/the-advantages-of-a-rolling-foot-in-human-walking"><img align="left" border="0" src="http://www.kaboodle.com/hi/img/2/0/0/24/2/AAAAAgi_kkcAAAAAACQmPQ.png?v=1169620880000"/></a>Accepted 24 July 2006 The plantigrade human foot rolls over the ground during each walking step, roughly analogous to a wheel. The center of pressure progresses on the...</p> natural research science Wed, 11 Oct 2006 01:23:48 PDT http://www.kaboodle.com/reviews/the-advantages-of-a-rolling-foot-in-human-walking http://www.kaboodle.com/reviews/123 <p><a href="http://www.kaboodle.com/reviews/123"></a>新华网消息：信息技术时代，数学越来越吃香。美国《商业周刊》1月23日（提前出版）一期发表一篇题为《数学将震撼你的世界》的文章，谈在数数码时代数学的神奇功能核作用。文章如下...</p> math Wed, 23 Aug 2006 20:36:14 PDT http://www.kaboodle.com/reviews/123 http://www.kaboodle.com/reviews/understanding-science <p><a href="http://www.kaboodle.com/reviews/understanding-science"><img align="left" border="0" src="http://www.kaboodle.com/hi/img/2/0/0/2b/6/AAAAAg8f9V0AAAAAACtuCA.png?v=1169712282000"/></a>Visualization is a process by which complex scientific data can be expressed in images that are easier to understand. These pages contain information, programs, and...</p> compute science Sat, 05 Aug 2006 08:59:51 PDT http://www.kaboodle.com/reviews/understanding-science http://www.kaboodle.com/reviews/moment-of-inertia <p><a href="http://www.kaboodle.com/reviews/moment-of-inertia"><img align="left" border="0" src="http://www.kaboodle.com/hi/img/2/0/0/2a/2/AAAAAmpMC6oAAAAAACovfg.png?v=1169707670000"/></a>Moment of inertia is the name given to rotational inertia, the rotational analog of mass for linear motion. It appears in the relationships for the dynamics of rotational...</p> science read Fri, 28 Jul 2006 09:34:33 PDT http://www.kaboodle.com/reviews/moment-of-inertia