📄 数值计算方法matlab例子.htm
字号:
<tr>
<td valign="middle" class="top_nav_menu" colspan="2"><script language='JavaScript1.2' type='text/JavaScript' src='/Article/JS/ShowClass_Menu.js'></script></td>
</tr>
</table>
<!--导航代码开始-->
<table width="760" border="0" align="center" cellpadding="0" cellspacing="0" class="top_Path" style="word-break:break-all;Width:fixed">
<tr>
<td width="5%" align="center"><img src="/Images/arrow3.gif" width="29" height="11"></td>
<td width="73%">您现在的位置： <a href='http://www.91tech.net'>中国软硬件结合技术网</a> >> <a href='/Article/Index.html'>文章中心</a> >> <a href='/Article/SoftTech/Index.html'>软件技术</a> >> <a href='/Article/SoftTech/TheoryTech/Index.html'>算法与理论</a> >> 正文</td>
<td width="22%" align=right><img src="/Images/User_Login.gif" width="13" height="13" align="absmiddle"> <a href="/User/User_Login.asp" target="_blank" class="top_UserLogin">用户登录</a> <img src="/Images/User_Reg.gif" width="13" height="13" align="absmiddle"> <a href="/Reg/User_Reg.asp" target="_blank" class="top_UserLogin">新用户注册</a> </td>
</tr>
</table>
<!--导航代码结束-->
<!-- ********网页顶部代码结束******** -->
<!-- ********网页中部代码开始******** -->
<!--文章显示代码开始-->
<table width="760" border="0" align="center" cellpadding="0" cellspacing="0" class="center_tdbgall" style="word-break:break-all;Width:fixed">
<tr>
<td colspan="2">
<table width="100%" border="0" cellspacing="0" cellpadding="0" class="main_title_760" style="word-break:break-all;Width:fixed">
<tr>
<td width="3%" valign="middle"> <img src="/Images/arrow.gif" width="11" height="14" align="absmiddle"></td>
<td width="66%"><font color=blue>[推荐]</font>数值计算方法(很使用的哦)</td>
<td width="18%"> <font color='#009900'></font></td>
<td width="13%" align='right'>【字体：<a href="javascript:fontZoomA();" class="top_UserLogin">小</a> <a href="javascript:fontZoomB();" class="top_UserLogin">大</a>】</td>
</tr>
</table></td>
</tr>
<tr align="center" valign="middle">
<td height="50" colspan="2" class="main_ArticleTitle" style="word-break:break-all;Width:fixed">数值计算方法(很使用的哦)</td>
</tr>
<tr align="center" valign="middle">
<td height="20" colspan="2" class="main_ArticleSubheading" style="word-break:break-all;Width:fixed"></td>
</tr>
<tr align="center" class="left_tdbgall">
<td colspan="2">作者：lizhaopeng 文章来源：本站原创 点击数：<script language='javascript' src='/Article/GetHits.asp?ArticleID=3473'></script> 更新时间：2006-3-14</td>
</tr>
<tr>
<td height="300" colspan="2" valign="top" class="main_tdbg_760" id="fontzoom" style="word-break:break-all;Width:fixed"> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 14pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt"><SPAN style="mso-spacerun: yes"> </SPAN></SPAN><FONT size=3><SPAN style="FONT-FAMILY: 黑体; mso-ascii-font-family: 'Times New Roman'">【<B style="mso-bidi-font-weight: normal">实验目的</B>】</SPAN><SPAN lang=EN-US style="mso-fareast-font-family: 黑体"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l0 level1 lfo2"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: 楷体_GB2312; mso-fareast-font-family: 宋体"><FONT size=3>1、</FONT><SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></B><SPAN style="FONT-FAMILY: 楷体_GB2312"><FONT size=3>掌握用<SPAN lang=EN-US>MATLAB计算拉格朗日、分段线性、三次样条三种插值的方法，改变节点的数目，对三种插值结果进行初步分析。<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l0 level1 lfo2"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: 楷体_GB2312; mso-fareast-font-family: 宋体"><FONT size=3>2、</FONT><SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></B><SPAN style="FONT-FAMILY: 楷体_GB2312"><FONT size=3>掌握用<SPAN lang=EN-US>MATLAB作线性最小二乘的方法。<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l0 level1 lfo2"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'"><FONT size=3>3、</FONT><SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></B><FONT size=3><SPAN style="FONT-FAMILY: 楷体_GB2312">通过实例学习如何用插值方法与拟合方法解决实际问题，注意二者的联系和区别。</SPAN><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN style="FONT-FAMILY: 黑体; mso-ascii-font-family: 'Times New Roman'">【<B style="mso-bidi-font-weight: normal">实验内容</B>】</SPAN><SPAN lang=EN-US style="mso-fareast-font-family: 黑体"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">预备：编制计算</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'">拉格朗日插值的</SPAN><SPAN lang=EN-US style="mso-fareast-font-family: 楷体_GB2312"><FONT face="Times New Roman">M</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'">文件：<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><FONT size=3><FONT face="Times New Roman"><SPAN style="FONT-FAMILY: 楷体">以下是拉格朗日插值的名为<SPAN lang=EN-US>y_lagrl的M文件：</SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 楷体; mso-bidi-font-size: 10.0pt"><o:p></o:p></SPAN></FONT></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; tab-stops: 18.0pt 36.0pt 54.0pt 72.0pt 90.0pt 108.0pt 126.0pt 144.0pt 162.0pt 180.0pt 198.0pt 216.0pt 234.0pt 252.0pt 270.0pt 288.0pt 306.0pt 324.0pt 342.0pt 360.0pt 378.0pt 396.0pt 414.0pt 432.0pt 450.0pt 468.0pt 486.0pt 504.0pt 522.0pt 540.0pt 558.0pt 576.0pt; mso-layout-grid-align: none"><SPAN lang=EN-US style="COLOR: blue; FONT-FAMILY: 'Courier New'; mso-bidi-font-family: 'Times New Roman'"><FONT size=3> <o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; tab-stops: 18.0pt 36.0pt 54.0pt 72.0pt 90.0pt 108.0pt 126.0pt 144.0pt 162.0pt 180.0pt 198.0pt 216.0pt 234.0pt 252.0pt 270.0pt 288.0pt 306.0pt 324.0pt 342.0pt 360.0pt 378.0pt 396.0pt 414.0pt 432.0pt 450.0pt 468.0pt 486.0pt 504.0pt 522.0pt 540.0pt 558.0pt 576.0pt; mso-layout-grid-align: none"><FONT size=3><SPAN lang=EN-US style="COLOR: blue; FONT-FAMILY: 'Courier New'; mso-bidi-font-family: 'Times New Roman'">function </SPAN><SPAN lang=EN-US style="FONT-FAMILY: 'Courier New'; mso-bidi-font-family: 'Times New Roman'">y=y_lagr1(x0,y0,x)<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; tab-stops: 18.0pt 36.0pt 54.0pt 72.0pt 90.0pt 108.0pt 126.0pt 144.0pt 162.0pt 180.0pt 198.0pt 216.0pt 234.0pt 252.0pt 270.0pt 288.0pt 306.0pt 324.0pt 342.0pt 360.0pt 378.0pt 396.0pt 414.0pt 432.0pt 450.0pt 468.0pt 486.0pt 504.0pt 522.0pt 540.0pt 558.0pt 576.0pt; mso-layout-grid-align: none"><SPAN lang=EN-US style="FONT-FAMILY: 'Courier New'; mso-bidi-font-family: 'Times New Roman'"><FONT size=3>n=length(x0);m=length(x);<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; tab-stops: 18.0pt 36.0pt 54.0pt 72.0pt 90.0pt 108.0pt 126.0pt 144.0pt 162.0pt 180.0pt 198.0pt 216.0pt 234.0pt 252.0pt 270.0pt 288.0pt 306.0pt 324.0pt 342.0pt 360.0pt 378.0pt 396.0pt 414.0pt 432.0pt 450.0pt 468.0pt 486.0pt 504.0pt 522.0pt 540.0pt 558.0pt 576.0pt; mso-layout-grid-align: none"><FONT size=3><SPAN lang=EN-US style="COLOR: blue; FONT-FAMILY: 'Courier New'; mso-bidi-font-family: 'Times New Roman'">for </SPAN><SPAN lang=EN-US style="FONT-FAMILY: 'Courier New'; mso-bidi-font-family: 'Times New Roman'">i=1:m<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; tab-stops: 18.0pt 36.0pt 54.0pt 72.0pt 90.0pt 108.0pt 126.0pt 144.0pt 162.0pt 180.0pt 198.0pt 216.0pt 234.0pt 252.0pt 270.0pt 288.0pt 306.0pt 324.0pt 342.0pt 360.0pt 378.0pt 396.0pt 414.0pt 432.0pt 450.0pt 468.0pt 486.0pt 504.0pt 522.0pt 540.0pt 558.0pt 576.0pt; mso-layout-grid-align: none"><SPAN lang=EN-US style="FONT-FAMILY: 'Courier New'; mso-bidi-font-family: 'Times New Roman'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>z=x(i);<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; tab-stops: 18.0pt 36.0pt 54.0pt 72.0pt 90.0pt 108.0pt 126.0pt 144.0pt 162.0pt 180.0pt 198.0pt 216.0pt 234.0pt 252.0pt 270.0pt 288.0pt 306.0pt 324.0pt 342.0pt 360.0pt 378.0pt 396.0pt 414.0pt 432.0pt 450.0pt 468.0pt 486.0pt 504.0pt 522.0pt 540.0pt 558.0pt 576.0pt; mso-layout-grid-align: none"><SPAN lang=EN-US style="FONT-FAMILY: 'Courier New'; mso-bidi-font-family: 'Times New Roman'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>s=0.0;<o:p></o:p></FONT></SPAN></P>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -