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📁 matlab 问题集,所有matlab的问题收集
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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>符号运算的精度控制                     hyphone </title></head><body><center><h1>BBS 水木清华站∶精华区</h1></center><a name="top"></a>发信人:&nbsp;halifax&nbsp;(抗震王子),&nbsp;信区:&nbsp;MathTools&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />标&nbsp;&nbsp;题:&nbsp;Re:&nbsp;请问:Matlab的运算有精度限制么?&nbsp;<br />发信站:&nbsp;BBS&nbsp;水木清华站&nbsp;(Sat&nbsp;Mar&nbsp;&nbsp;9&nbsp;22:32:23&nbsp;2002)&nbsp;<br />&nbsp;<br />符号运算就是精确计算&nbsp;<br />将数据定义为符号变量&nbsp;<br />或者用Digits命令定义精度控制&nbsp;<br />然后用vpa命令实现可控精度计算&nbsp;<br />【&nbsp;在&nbsp;R9&nbsp;(9号小罗)&nbsp;的大作中提到:&nbsp;】&nbsp;<br />∶<i>&nbsp;如何实现任意精度的运算呢?&nbsp;</i><br />∶<i>&nbsp;3x!&nbsp;</i><br />&nbsp;<br />&nbsp;<br />--&nbsp;<br />&nbsp;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;o&nbsp;o&nbsp;o&nbsp;o&nbsp;o&nbsp;.&nbsp;.&nbsp;.&nbsp;.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;逃亡列车&nbsp;&nbsp;&nbsp;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;o&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;_____&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Runaway&nbsp;train&nbsp;never&nbsp;going&nbsp;back&nbsp;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.][__n_n_|OO[&nbsp;&nbsp;====____&nbsp;&nbsp;&nbsp;Wrong&nbsp;way&nbsp;on&nbsp;a&nbsp;one&nbsp;way&nbsp;track.&nbsp;<br />&nbsp;&nbsp;&nbsp;&nbsp;&gt;(________|__|_[________]&nbsp;&nbsp;Seems&nbsp;like&nbsp;I&nbsp;should&nbsp;be&nbsp;getting&nbsp;<br />&nbsp;&nbsp;_//oo&nbsp;|-OOOO&nbsp;oo'&nbsp;&nbsp;oo&nbsp;&nbsp;&nbsp;&nbsp;oo&nbsp;&nbsp;&nbsp;Somehow&nbsp;neither&nbsp;here&nbsp;nor&nbsp;there&nbsp;<br />&nbsp;<br />&nbsp;<br />※&nbsp;来源:·BBS&nbsp;水木清华站&nbsp;smth.org·[FROM:&nbsp;202.113.189.179]&nbsp;<br /><a href="00000002.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="00000004.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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