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来自「matlab 问题集,所有matlab的问题收集」· HTM 代码 · 共 41 行

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<?xml version="1.0" encoding="gb2312"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312"/><title>Re: 请问matlab中有关eps的问题          xxhn </title></head><body><center><h1>BBS 水木清华站∶精华区</h1></center><a name="top"></a>发信人:&nbsp;kangfulcf&nbsp;(康夫~~PLS~~一日一千,笔耕不辍),&nbsp;信区:&nbsp;MathTools&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />标&nbsp;&nbsp;题:&nbsp;Re:&nbsp;请问matlab中有关eps的问题&nbsp;<br />发信站:&nbsp;BBS&nbsp;水木清华站&nbsp;(Thu&nbsp;Oct&nbsp;10&nbsp;21:26:50&nbsp;2002),&nbsp;站内信件&nbsp;<br />&nbsp;<br />eps是加在sqrt里面吧?&nbsp;<br />就是一个很小的正数,为了防止开方的数为0吧。&nbsp;<br />【&nbsp;在&nbsp;make&nbsp;(白河寒秋)&nbsp;的大作中提到:&nbsp;】&nbsp;<br />∶<i>&nbsp;我在看matlab程序时,发现一般在用sqrt求平方根时,都会在后面加上eps。&nbsp;</i><br />∶<i>&nbsp;例如:c=sqrt(a.^2+b.^2)+eps&nbsp;</i><br />∶<i>&nbsp;请问这是为什么?&nbsp;</i><br />∶<i>&nbsp;谢谢&nbsp;</i><br />&nbsp;<br />&nbsp;<br />--&nbsp;<br />&nbsp;&nbsp;&nbsp;╭&nbsp;╭──╮&nbsp;╮&nbsp;<br />&nbsp;&nbsp;&nbsp;╰═@&nbsp;&nbsp;@&nbsp;&nbsp;═╯&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;╭oo&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;──╮&nbsp;&nbsp;&nbsp;&nbsp;如果&nbsp;全世界我也可以放弃&nbsp;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;╰╮&nbsp;─╯&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;╞╮&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;至少还有你&nbsp;值得我去珍惜&nbsp;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;│&nbsp;&nbsp;┌─╮&nbsp;&nbsp;│╰=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;而你在这里&nbsp;就是生命的奇迹&nbsp;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;└└┘└└─┘&nbsp;<br />&nbsp;<br />&nbsp;<br />※&nbsp;来源:·BBS&nbsp;水木清华站&nbsp;smth.edu.cn·[FROM:&nbsp;166.111.73.22]&nbsp;<br /><a href="00000056.htm">上一篇</a><a href="javascript:history.go(-1)">返回上一页</a><a href="index.htm">回到目录</a><a href="#top">回到页首</a><a href="00000058.htm">下一篇</a></h1></center><center><h1>BBS 水木清华站∶精华区</h1></center></body></html>

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