Matlab与数值分析实验.rar_数值分析_matlab与数值分析实验

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sc0 ls0 ws0">数值分析实验</div><div class="t m0 x4 h4 yb ff3 fs2 fc0 sc0 ls0 ws0">数值分析实验<span class="_ _2"></span>数值分析实验</div><div class="t m0 x4 h4 ya ff3 fs2 fc0 sc0 ls0 ws0">数值分析实验 </div><div class="t m0 x5 h4 yb ff3 fs2 fc0 sc0 ls0 ws0"> <span class="_ _1"></span> </div><div class="t m0 x5 h4 ya ff3 fs2 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h3 yc ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h3 yd ff2 fs1 fc0 sc0 ls0 ws0"> <span class="_ _0"></span> </div><div class="t m0 x3 h3 yc ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h3 ye ff2 fs1 fc0 sc0 ls0 ws0">作者</div><div class="t m0 x3 h3 yf ff2 fs1 fc0 sc0 ls0 ws0">作者<span class="_ _3"></span>作者</div><div class="t m0 x3 h3 ye ff2 fs1 fc0 sc0 ls0 ws0">作者:</div><div class="t m0 x6 h3 yf ff2 fs1 fc0 sc0 ls0 ws0">:<span class="_ _0"></span>:</div><div class="t m0 x6 h3 ye ff2 fs1 fc0 sc0 ls0 ws0">:S</div><div class="t m0 x7 h3 yf ff2 fs1 fc0 sc0 ls0 ws0">S<span class="_ _0"></span>S</div><div class="t m0 x7 h3 ye ff2 fs1 fc0 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sc0 ls0 ws0"> <span class="_ _0"></span> </div><div class="t m0 xa h3 y32 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xa h3 y34 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xa h3 y35 ff2 fs1 fc0 sc0 ls0 ws0"> <span class="_ _0"></span> </div><div class="t m0 xa h3 y34 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xa h3 y36 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xa h3 y37 ff2 fs1 fc0 sc0 ls0 ws0"> <span class="_ _0"></span> </div><div class="t m0 xa h3 y36 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xa h3 y38 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xa h3 y39 ff2 fs1 fc0 sc0 ls0 ws0"> <span class="_ _0"></span> </div><div class="t m0 xa h3 y38 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xa h3 y3a ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xa h3 y3b ff2 fs1 fc0 sc0 ls0 ws0"> <span class="_ _0"></span> </div><div class="t m0 xa h3 y3a ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xa h3 y3c ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xa h3 y3d ff2 fs1 fc0 sc0 ls0 ws0"> <span class="_ _0"></span> </div><div class="t m0 xa h3 y3c ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xb h3 y3e ff2 fs1 fc0 sc0 ls0 ws0">(</div><div class="t m0 xb h3 y3f ff2 fs1 fc0 sc0 ls0 ws0">(<span class="_ _0"></span>(</div><div class="t m0 xb h3 y3e ff2 fs1 fc0 sc0 ls0 ws0">(安全矩阵研究<span class="_ _4"></span>组织版<span class="_ _4"></span>权所有</div><div class="t m0 xc h3 y3f ff2 fs1 fc0 sc0 ls0 ws0">安全矩<span class="_ _4"></span>阵研究<span class="_ _4"></span>组织版权所<span class="_ _4"></span>有<span class="_ _6"></span>安全矩<span class="_ _4"></span>阵研究<span class="_ _4"></span>组织版权所<span class="_ _4"></span>有</div><div class="t m0 xc h3 y3e ff2 fs1 fc0 sc0 ls0 ws0">安全矩<span class="_ _4"></span>阵研究<span class="_ _4"></span>组织版权所<span class="_ _4"></span>有.Sec<span class="_ _4"></span>uri<span class="_ _4"></span>ty Ma<span class="_ _4"></span>trix<span class="_ _4"></span> )</div><div class="t m0 x9 h3 y3f ff2 fs1 fc0 sc0 ls0 ws0">.S<span class="_ _4"></span>ecur<span class="_ _4"></span>ity M<span class="_ _4"></span>atr<span class="_ _4"></span>ix )<span class="_ _7"></span>.S<span class="_ _4"></span>ecur<span class="_ _4"></span>ity M<span class="_ _4"></span>atr<span class="_ _4"></span>ix )</div><div class="t m0 x9 h3 y3e ff2 fs1 fc0 sc0 ls0 ws0">.S<span class="_ _4"></span>ecur<span class="_ _4"></span>ity M<span class="_ _4"></span>atr<span class="_ _4"></span>ix ) </div><div class="t m0 xd h3 y3f ff2 fs1 fc0 sc0 ls0 ws0"> <span class="_ _0"></span> </div><div class="t m0 xd h3 y3e ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xe h3 y40 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xe h3 y41 ff2 fs1 fc0 sc0 ls0 ws0"> <span class="_ _0"></span> </div><div class="t m0 xe h3 y40 ff2 fs1 fc0 sc0 ls0 ws0"> </div></div><div class="pi" data-data='{"ctm":[1.611639,0.000000,0.000000,1.611639,0.000000,0.000000]}'></div></div> </body> </html>

<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62523db16caf596192640b4b/bg2.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">- 2 - </div><div class="t m0 xf h3 y42 ff2 fs1 fc0 sc0 ls0 ws0">数值分析<span class="_ _4"></span>实验</div><div class="t m0 xf h3 y43 ff2 fs1 fc0 sc0 ls0 ws0">数值分析<span class="_ _4"></span>实验<span class="_ _8"></span>数值分析<span class="_ _4"></span>实验</div><div class="t m0 xf h3 y42 ff2 fs1 fc0 sc0 ls0 ws0">数值分析<span class="_ _4"></span>实验<</div><div class="t m0 x10 h3 y43 ff2 fs1 fc0 sc0 ls0 ws0"><<span class="_ _0"></span><</div><div class="t m0 x10 h3 y42 ff2 fs1 fc0 sc0 ls0 ws0"><一</div><div class="t m0 x11 h3 y43 ff2 fs1 fc0 sc0 ls0 ws0">一<span class="_ _9"></span>一</div><div class="t m0 x11 h3 y42 ff2 fs1 fc0 sc0 ls0 ws0">一></div><div class="t m0 x12 h3 y43 ff2 fs1 fc0 sc0 ls0 ws0">><span class="_ _0"></span>></div><div class="t m0 x12 h3 y42 ff2 fs1 fc0 sc0 ls0 ws0">> </div><div class="t m0 x13 h3 y43 ff2 fs1 fc0 sc0 ls0 ws0"> <span class="_ _0"></span> </div><div class="t m0 x13 h3 y42 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x12 h3 y44 ff2 fs1 fc0 sc0 ls0 ws0">----</div><div class="t m0 x12 h3 y45 ff2 fs1 fc0 sc0 ls0 ws0">----<span class="_ _a"></span>----</div><div class="t m0 x12 h5 y44 ff2 fs1 fc0 sc0 ls0 ws0">----<span class="ff4"> Matlab<span class="_ _b"> </span>绪论 </span></div><div class="t m0 x2 h5 y46 ff4 fs1 fc0 sc0 ls0 ws0"> 一</div><div class="t m0 x14 h6 y47 ff5 fs3 fc0 sc0 ls0 ws0"><span class="fc1 sc0">\</span></div><div class="t m0 x15 h5 y46 ff4 fs1 fc0 sc0 ls0 ws0"> 实验目的 </div><div class="t m0 x16 h7 y48 ff4 fs1 fc0 sc0 ls0 ws0">1)<span class="ff6"> <span class="_ _b"> </span></span>熟悉<span class="_ _b"> </span>Matlab<span class="_ _c"> </span>的运行环境及各种窗口 </div><div class="t m0 x16 h7 y49 ff4 fs1 fc0 sc0 ls0 ws0">2)<span class="ff6"> <span class="_ _b"> </span></span>掌握<span class="_ _b"> </span>Matlab<span class="_ _c"> </span>的矩阵变量类型,矩阵输入和矩阵的基本运算 </div><div class="t m0 x16 h7 y4a ff4 fs1 fc0 sc0 ls0 ws0">3)<span class="ff6"> <span class="_ _b"> </span></span>掌握命令及函数文件的作用及区别,并编写简单的<span class="_ _b"> </span>M<span class="_ _c"> </span>文件 </div><div class="t m0 x16 h7 y4b ff4 fs1 fc0 sc0 ls0 ws0">4)<span class="ff6"> <span class="_ _b"> </span></span>能熟练的向查寻目录中添加新目录,掌握常用的<span class="_ _b"> </span>Matlab<span class="_ _c"> </span>系统命令 </div><div class="t m0 x2 h5 y4c ff4 fs1 fc0 sc0 ls0 ws0"> 二</div><div class="t m0 x14 h6 y4d ff5 fs3 fc0 sc0 ls0 ws0"><span class="fc1 sc0">\</span></div><div class="t m0 x15 h5 y4c ff4 fs1 fc0 sc0 ls0 ws0"> 实验内容 </div><div class="t m0 x17 h5 y4e ff4 fs1 fc0 sc0 ls0 ws0">一> Matlab<span class="_ _b"> </span>启动与环境设置 </div><div class="t m0 x2 h5 y4f ff4 fs1 fc0 sc0 ls0 ws0"> 1)启动 </div><div class="t m0 x2 h5 yc ff4 fs1 fc0 sc0 ls0 ws0"> 双击桌面图标 </div><div class="t m0 xb h5 ye ff4 fs1 fc0 sc0 ls0 ws0">开始>程序>Matlab </div><div class="t m0 xb h5 y10 ff4 fs1 fc0 sc0 ls0 ws0">安装目录>bin>matlab </div><div class="t m0 x2 h5 y12 ff4 fs1 fc0 sc0 ls0 ws0"> 2)环境设置 </div><div class="t m0 x2 h5 y14 ff4 fs1 fc0 sc0 ls0 ws0"> 命令窗口(Command Window) 执行命令行,Matlab<span class="_ _b"> </span>主窗口; </div><div class="t m0 xb h5 y16 ff4 fs1 fc0 sc0 ls0 ws0">窗口颜色及字体 File>Preferences.. </div><div class="t m0 x2 h5 y18 ff4 fs1 fc0 sc0 ls0 ws0"> 当前目录(Current Directory) </div><div class="t m0 x2 h5 y1a ff4 fs1 fc0 sc0 ls0 ws0"> File>Set Path 用于将新文件夹加入搜索路径,设置当前文件默</div><div class="t m0 x2 h5 y1c ff4 fs1 fc0 sc0 ls0 ws0">认目录; </div><div class="t m0 x2 h5 y1e ff4 fs1 fc0 sc0 ls0 ws0"> 3)Matlab<span class="_ _b"> </span>常用命令 </div><div class="t m0 x2 h5 y20 ff4 fs1 fc0 sc0 ls0 ws0"> 上下箭头 调出最新用过的命令,重新执行 </div><div class="t m0 x2 h5 y22 ff4 fs1 fc0 sc0 ls0 ws0"> cd+目录名 改变当前目录 </div><div class="t m0 x2 h5 y24 ff4 fs1 fc0 sc0 ls0 ws0"> help 显示当前搜索路径中所有目录名称 </div><div class="t m0 x2 h5 y26 ff4 fs1 fc0 sc0 ls0 ws0"> help+函数(类)名 查找函数(类),给出函数用法及参数 </div><div class="t m0 x2 h5 y28 ff4 fs1 fc0 sc0 ls0 ws0"> lookfor+函数关键字 查询根据关键字搜索到的相关函数 </div><div class="t m0 x2 h5 y2a ff4 fs1 fc0 sc0 ls0 ws0"> exist+变量名 变量检验函数 </div><div class="t m0 x2 h5 y2c ff4 fs1 fc0 sc0 ls0 ws0"> what 目录中文件列表 </div><div class="t m0 x2 h5 y2e ff4 fs1 fc0 sc0 ls0 ws0"> who 内存变量列表 </div><div class="t m0 x2 h5 y30 ff4 fs1 fc0 sc0 ls0 ws0"> whos 内存变量详细信息 </div><div class="t m0 x2 h5 y32 ff4 fs1 fc0 sc0 ls0 ws0"> which 确定文件位置 </div><div class="t m0 x2 h5 y34 ff4 fs1 fc0 sc0 ls0 ws0"> clc 清屏 </div><div class="t m0 x2 h5 y36 ff4 fs1 fc0 sc0 ls0 ws0"> ! 调用<span class="_ _b"> </span>Dos<span class="_ _c"> </span>命令 </div><div class="t m0 x2 h5 y38 ff4 fs1 fc0 sc0 ls0 ws0"> 4)联机演示系统 </div><div class="t m0 x2 h5 y3a ff4 fs1 fc0 sc0 ls0 ws0"> Help>Demos.. </div><div class="t m0 x2 h5 y3c ff4 fs1 fc0 sc0 ls0 ws0"> 输入命令:intro </div><div class="t m0 x2 h5 y3e ff4 fs1 fc0 sc0 ls0 ws0"> 二>Matlab<span class="_ _b"> </span>基本运算操作 </div><div class="t m0 x2 h5 y50 ff4 fs1 fc0 sc0 ls0 ws0"> 1)数据类型 </div><div class="t m0 x2 h5 y51 ff4 fs1 fc0 sc0 ls0 ws0"> 变量 区分大小写,长度不超过<span class="_ _b"> </span>31,字母开头 </div><div class="t m0 x2 h5 y52 ff4 fs1 fc0 sc0 ls0 ws0"> 常量 </div><div class="t m0 x2 h5 y53 ff4 fs1 fc0 sc0 ls0 ws0"> i,j 虚单位,定义<span class="_ _b"> </span>sqrt(-1) </div><div class="t m0 x18 h5 y54 ff4 fs1 fc0 sc0 ls0 ws0">pi 圆周率 </div><div class="t m0 x2 h5 y55 ff4 fs1 fc0 sc0 ls0 ws0"> eps 浮点运算的相对精度<span class="_ _b"> </span>exp(-52) </div><div class="t m0 x18 h5 y56 ff4 fs1 fc0 sc0 ls0 ws0">NaN Not-a-Number,表示不定值 </div></div><div class="pi" data-data='{"ctm":[1.611639,0.000000,0.000000,1.611639,0.000000,0.000000]}'></div></div>

<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62523db16caf596192640b4b/bg3.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">- 3 - </div><div class="t m0 x2 h5 y2 ff4 fs1 fc0 sc0 ls0 ws0"> ans 系统缺省结果输出变量 </div><div class="t m0 x2 h5 y4 ff4 fs1 fc0 sc0 ls0 ws0"> 数字格式 用<span class="_ _b"> </span>format<span class="_ _c"> </span>命令控制 </div><div class="t m0 x2 h5 y44 ff4 fs1 fc0 sc0 ls0 ws0"> short long hex long g </div><div class="t m0 x2 h5 y46 ff4 fs1 fc0 sc0 ls0 ws0"> 2)向量及矩阵 </div><div class="t m0 x2 h5 y48 ff4 fs1 fc0 sc0 ls0 ws0"> 输入 </div><div class="t m0 x2 h5 y49 ff4 fs1 fc0 sc0 ls0 ws0"> >>a=1:4:12 </div><div class="t m0 x2 h5 y4a ff4 fs1 fc0 sc0 ls0 ws0"> >>b=1:4 (默认间距<span class="_ _b"> </span>1) </div><div class="t m0 x2 h5 y4b ff4 fs1 fc0 sc0 ls0 ws0"> >>c=linspace(1,12,6) </div><div class="t m0 x2 h5 y4c ff4 fs1 fc0 sc0 ls0 ws0"> >>d=[1 2 3 4;2 3 4 5;5 6 7 8]; %';'使得屏幕上不显示操作结</div><div class="t m0 x2 h5 y4e ff4 fs1 fc0 sc0 ls0 ws0">果) </div><div class="t m0 x2 h5 y4f ff4 fs1 fc0 sc0 ls0 ws0"> >>d %显示<span class="_ _b"> </span>d<span class="_ _c"> </span>内容 </div><div class="t m0 x2 h5 yc ff4 fs1 fc0 sc0 ls0 ws0"> 打开<span class="_ _b"> </span>Workspace<span class="_ _c"> </span>窗口(Veiw<span class="_ _c"> </span>菜单下),双击<span class="_ _b"> </span>d,并编辑修改 </div><div class="t m0 x2 h5 ye ff4 fs1 fc0 sc0 ls0 ws0"> >>d %显示修改后的<span class="_ _b"> </span>d </div><div class="t m0 xb h5 y10 ff4 fs1 fc0 sc0 ls0 ws0">>>e=ones(3,3) </div><div class="t m0 x2 h5 y12 ff4 fs1 fc0 sc0 ls0 ws0"> >>s=rand(5,6) </div><div class="t m0 x2 h5 y14 ff4 fs1 fc0 sc0 ls0 ws0"> >>h=rand(size(s)) </div><div class="t m0 x2 h5 y16 ff4 fs1 fc0 sc0 ls0 ws0"> 运算 </div><div class="t m0 x2 h5 y18 ff4 fs1 fc0 sc0 ls0 ws0"> >>a+b; </div><div class="t m0 x2 h5 y1a ff4 fs1 fc0 sc0 ls0 ws0"> >>b=ones(size(d))+d; </div><div class="t m0 x2 h5 y1c ff4 fs1 fc0 sc0 ls0 ws0"> >>a=b'; </div><div class="t m0 x2 h5 y1e ff4 fs1 fc0 sc0 ls0 ws0"> >>c=inv(e+eye(size(e))*a; %inv<span class="_ _b"> </span>矩阵取逆 </div><div class="t m0 x2 h5 y20 ff4 fs1 fc0 sc0 ls0 ws0"> 三>Matlab<span class="_ _b"> </span>的文件 </div><div class="t m0 x17 h5 y22 ff4 fs1 fc0 sc0 ls0 ws0">1) 命令文件 </div><div class="t m0 x19 h5 y24 ff4 fs1 fc0 sc0 ls0 ws0">相当于在<span class="_ _b"> </span>Command Window<span class="_ _c"> </span>中逐行输入并运行命令. </div><div class="t m0 x1a h5 y26 ff4 fs1 fc0 sc0 ls0 ws0"> * 后缀名.m </div><div class="t m0 x1a h5 y28 ff4 fs1 fc0 sc0 ls0 ws0"> * 常用于需经常调用的命令集 </div><div class="t m0 x1b h5 y2a ff4 fs1 fc0 sc0 ls0 ws0">* 定义的变量及其值的改变在工作空间中有效 </div><div class="t m0 x17 h5 y2c ff4 fs1 fc0 sc0 ls0 ws0">2) 函数文件 </div><div class="t m0 x1c h8 y2e ff4 fs1 fc0 sc0 ls0 ws0"> 完成特定的<span class="ff7">带</span>有参数(<span class="ff7">返回</span>值)的<span class="ff7">计</span>算的函数式文件 </div><div class="t m0 x1d h8 y30 ff4 fs1 fc0 sc0 ls0 ws0">* 后缀名.m,<span class="ff7">第</span>一<span class="ff7">句为<span class="_ _b"> </span></span>function<span class="_ _c"> </span><span class="ff7">语句</span> </div><div class="t m0 x1d h8 y32 ff4 fs1 fc0 sc0 ls0 ws0">* 定义的变量在调用结<span class="ff7">束</span>后<span class="ff7">自</span>动<span class="_ _b"> </span>free,不<span class="ff7">影响</span>工作空间变量 </div><div class="t m0 x1d h8 y34 ff4 fs1 fc0 sc0 ls0 ws0">* <span class="ff7">保</span>存文件名<span class="ff7">必须</span>与定义函数名一<span class="ff7">致</span> </div><div class="t m0 x2 h5 y36 ff4 fs1 fc0 sc0 ls0 ws0"> 3) 设置当前目录(Current Directory) </div><div class="t m0 x2 h8 y38 ff4 fs1 fc0 sc0 ls0 ws0"> 单击主窗口<span class="_ _b"> </span>Current Directory<span class="_ _c"> </span>列表<span class="ff7">框浏览按钮</span></div><div class="t m0 xd h5 y57 ff4 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x2 h8 y3e ff4 fs1 fc0 sc0 ls0 ws0"> <span class="ff7">选</span>定<span class="ff7">要</span>设置<span class="ff7">为</span>当前目录的文件 </div><div class="t m0 x2 h8 y50 ff7 fs1 fc0 sc0 ls0 ws0">例<span class="_ _b"> </span><span class="ff4">1:添加新的查询目录 </span></div><div class="t m0 x2 h8 y51 ff4 fs1 fc0 sc0 ls0 ws0"> 操作 1) 在<span class="ff7">选</span>定位置新<span class="ff7">建</span>文件夹 </div><div class="t m0 x2 h8 y52 ff4 fs1 fc0 sc0 ls0 ws0"> 2) 在主窗口<span class="_ _b"> </span>File<span class="_ _c"> </span>菜单下<span class="ff7">选</span>定<span class="_ _c"> </span>Set Path..<span class="ff7">选项</span> </div><div class="t m0 x2 h8 y53 ff4 fs1 fc0 sc0 ls0 ws0"> 3) 在<span class="ff7">弹</span>出对<span class="ff7">话框</span>中单击<span class="_ _b"> </span><span class="ff7">A</span>dd Folder </div><div class="t m0 x2 h8 y54 ff4 fs1 fc0 sc0 ls0 ws0"> 4) 在在<span class="ff7">弹</span>出对<span class="ff7">话框</span>中<span class="ff7">选</span>定新<span class="ff7">建</span>的文件夹 </div><div class="t m0 x2 h8 y55 ff4 fs1 fc0 sc0 ls0 ws0"> 5) 单击确定并<span class="ff7">保</span>存添加后的查询目录,<span class="ff7">退</span>出 </div><div class="t m0 x2 h8 y56 ff7 fs1 fc0 sc0 ls0 ws0">例<span class="_ _b"> </span><span class="ff4">2:编写命令文件<span class="_ _c"> </span>demo1<span class="_ _c"> </span>完成</span>以<span class="ff4">下操作 </span></div></div><div class="pi" data-data='{"ctm":[1.611639,0.000000,0.000000,1.611639,0.000000,0.000000]}'></div></div>

<div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62523db16caf596192640b4b/bg4.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">- 4 - </div><div class="t m0 x2 h8 y2 ff4 fs1 fc0 sc0 ls0 ws0"> <span class="ff7">建立</span>数<span class="ff7">组<span class="_ _b"> </span></span>a=[1,2,3,...,2<span class="ff7">0</span>],b=[1,3,5,...,3<span class="ff7">9</span>],并<span class="ff7">求<span class="_ _c"> </span></span>a,b<span class="_ _c"> </span>内<span class="ff7">积</span> </div><div class="t m0 x2 h8 y4 ff4 fs1 fc0 sc0 ls0 ws0"> 操作 1) 主窗口点击新<span class="ff7">建按钮</span> <span class="_ _d"> </span> </div><div class="t m0 x2 h8 y44 ff4 fs1 fc0 sc0 ls0 ws0"> 2) 在<span class="ff7">弹</span>出的文本编辑窗口添加 </div><div class="t m0 x2 h8 y46 ff4 fs1 fc0 sc0 ls0 ws0"> a=1:2<span class="ff7">0</span> </div><div class="t m0 x2 h8 y48 ff4 fs1 fc0 sc0 ls0 ws0"> b=1:2:3<span class="ff7">9</span> </div><div class="t m0 x1c h5 y49 ff4 fs1 fc0 sc0 ls0 ws0"> sum=a*b' </div><div class="t m0 x1c h8 y58 ff4 fs1 fc0 sc0 ls0 ws0"> 3) 单击<span class="ff7">保</span>存<span class="ff7">按钮<span class="_ _e"> </span></span> 将文件命名<span class="ff7">为<span class="_ _f"> </span></span>demo1<span class="_ _f"> </span><span class="ff7">保</span>存在<span class="ff7">例<span class="_ _f"> </span></span>1<span class="_ _f"> </span>新<span class="ff7">建</span>文件夹中 </div><div class="t m0 x1c h8 y4c ff4 fs1 fc0 sc0 ls0 ws0"> 4) 在<span class="_ _b"> </span>Command Window<span class="_ _c"> </span>中输入<span class="_ _c"> </span>demo1<span class="_ _b"> </span>并<span class="ff7">回车</span> </div><div class="t m0 x2 h8 y4e ff7 fs1 fc0 sc0 ls0 ws0">例<span class="_ _b"> </span><span class="ff4">3:编写函数文件<span class="_ _c"> </span>demo2,</span>返回<span class="ff4">输入变量的内</span>积<span class="ff4"> </span></div><div class="t m0 x2 h8 y4f ff4 fs1 fc0 sc0 ls0 ws0"> 操作:1) 新<span class="ff7">建<span class="_ _b"> </span></span>M<span class="_ _c"> </span>文件,编辑<span class="ff7">如</span>下: </div><div class="t m0 x2 h5 yc ff4 fs1 fc0 sc0 ls0 ws0"> function sum=demo2(a,b) </div><div class="t m0 x2 h5 ye ff4 fs1 fc0 sc0 ls0 ws0"> sum=a*b'; </div><div class="t m0 x2 h8 y10 ff4 fs1 fc0 sc0 ls0 ws0"> 2) <span class="ff7">保</span>存文件在查询目录下,<span class="ff7">注意</span>不<span class="ff7">要</span>修改默认名 </div><div class="t m0 x2 h5 y12 ff4 fs1 fc0 sc0 ls0 ws0"> 3) 在<span class="_ _b"> </span>Command Window<span class="_ _c"> </span>中输入 </div><div class="t m0 x2 h8 y14 ff4 fs1 fc0 sc0 ls0 ws0"> >>a=1:2<span class="ff7">0</span>; </div><div class="t m0 x2 h8 y16 ff4 fs1 fc0 sc0 ls0 ws0"> >>b=1:2:3<span class="ff7">9</span>; </div><div class="t m0 x2 h5 y18 ff4 fs1 fc0 sc0 ls0 ws0"> >>sum=demo2(a,b) </div><div class="t m0 x1c h5 y1a ff4 fs1 fc0 sc0 ls0 ws0"> 三</div><div class="t m0 x17 h6 y59 ff5 fs3 fc0 sc0 ls0 ws0"><span class="fc1 sc0">\</span></div><div class="t m0 x1a h8 y1a ff4 fs1 fc0 sc0 ls0 ws0"> 练<span class="ff7">习</span> </div><div class="t m0 xc h7 y1c ff4 fs1 fc0 sc0 ls0 ws0">1)<span class="ff6"> <span class="_ _b"> </span></span>熟悉<span class="_ _b"> </span>Matlab<span class="_ _c"> </span>环境,<span class="ff7">进</span>入<span class="_ _b"> </span>Demo. </div><div class="t m0 xc h7 y1e ff4 fs1 fc0 sc0 ls0 ws0">2)<span class="ff6"> <span class="_ _b"> </span></span>编写函数文件,<span class="ff7">要求返回</span>输入矩阵的行列式(det()),<span class="ff7">秩</span>(rank())</div><div class="t m0 x1e h8 y20 ff4 fs1 fc0 sc0 ls0 ws0">及<span class="ff7">转</span>置矩阵. </div><div class="t m0 x1c h8 y22 ff4 fs1 fc0 sc0 ls0 ws0"> 2<span class="ff7">00</span>4<span class="ff7">/</span>2<span class="ff7">/</span>28 </div><div class="t m0 x1c h5 y24 ff4 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1c h5 y26 ff4 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1f h3 y28 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1f h3 y29 ff2 fs1 fc0 sc0 ls0 ws0"> <span class="_ _0"></span> </div><div class="t m0 x1f h3 y28 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x20 h3 y2a ff2 fs1 fc0 sc0 ls0 ws0">数值分析<span class="_ _4"></span>实验</div><div class="t m0 x20 h3 y2b ff2 fs1 fc0 sc0 ls0 ws0">数值分析<span class="_ _4"></span>实验<span class="_ _8"></span>数值分析<span class="_ _4"></span>实验</div><div class="t m0 x20 h3 y2a ff2 fs1 fc0 sc0 ls0 ws0">数值分析<span class="_ _4"></span>实验<</div><div class="t m0 x21 h3 y2b ff2 fs1 fc0 sc0 ls0 ws0"><<span class="_ _0"></span><</div><div class="t m0 x21 h3 y2a ff2 fs1 fc0 sc0 ls0 ws0"><二</div><div class="t m0 x22 h3 y2b ff2 fs1 fc0 sc0 ls0 ws0">二<span class="_ _9"></span>二</div><div class="t m0 x22 h3 y2a ff2 fs1 fc0 sc0 ls0 ws0">二></div><div class="t m0 x23 h3 y2b ff2 fs1 fc0 sc0 ls0 ws0">><span class="_ _0"></span>></div><div class="t m0 x23 h3 y2a ff2 fs1 fc0 sc0 ls0 ws0">> </div><div class="t m0 x24 h3 y2b ff2 fs1 fc0 sc0 ls0 ws0"> <span class="_ _0"></span> </div><div class="t m0 x24 h3 y2a ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1c h8 y2c ff4 fs1 fc0 sc0 ls0 ws0"> -----Matlab<span class="_ _b"> </span><span class="ff7">绘</span>图及程序设<span class="ff7">计</span> </div><div class="t m0 x1c h5 y2e ff4 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x2 h5 y30 ff4 fs1 fc0 sc0 ls0 ws0"> 一</div><div class="t m0 x14 h6 y5a ff5 fs3 fc0 sc0 ls0 ws0"><span class="fc1 sc0">\</span></div><div class="t m0 x15 h5 y30 ff4 fs1 fc0 sc0 ls0 ws0"> 实验目的 </div><div class="t m0 x25 h7 y32 ff4 fs1 fc0 sc0 ls0 ws0">1)<span class="ff6"> <span class="_ _b"> </span></span>掌握<span class="_ _b"> </span>Matlab<span class="_ _c"> </span>的控制<span class="ff7">语句</span> </div><div class="t m0 x25 h7 y34 ff4 fs1 fc0 sc0 ls0 ws0">2)<span class="ff6"> <span class="_ _b"> </span></span>熟悉数<span class="ff7">组</span>运算 </div><div class="t m0 x25 h7 y36 ff4 fs1 fc0 sc0 ls0 ws0">3)<span class="ff6"> <span class="_ _b"> </span></span>Matlab<span class="_ _b"> </span>图<span class="ff7">形处理功</span>能 </div><div class="t m0 x25 h7 y38 ff4 fs1 fc0 sc0 ls0 ws0">4)<span class="ff6"> <span class="_ _b"> </span></span>Matlab<span class="_ _b"> </span>程序<span class="ff7">初步</span>设<span class="ff7">计</span> </div><div class="t m0 x2 h5 y3a ff4 fs1 fc0 sc0 ls0 ws0"> 二</div><div class="t m0 x14 h6 y5b ff5 fs3 fc0 sc0 ls0 ws0"><span class="fc1 sc0">\</span></div><div class="t m0 x15 h5 y3a ff4 fs1 fc0 sc0 ls0 ws0"> 实验内容 </div><div class="t m0 x26 h8 y3c ff4 fs1 fc0 sc0 ls0 ws0">一>数<span class="ff7">组</span>运算(相<span class="ff7">同</span>类型的运算) </div><div class="t m0 xb h9 y3e ff4 fs1 fc0 sc0 ls0 ws0">1)<span class="ff1">’</span>:<span class="ff1">’<span class="ff7">引</span></span>用 </div><div class="t m0 xb h8 y50 ff4 fs1 fc0 sc0 ls0 ws0"> *<span class="ff7">A</span>(:,n) 矩阵<span class="_ _b"> </span><span class="ff7">A<span class="_ _c"> </span></span>的<span class="_ _c"> </span>n<span class="_ _b"> </span>列所有<span class="ff7">元素</span> </div><div class="t m0 xb h8 y51 ff4 fs1 fc0 sc0 ls0 ws0"> >><span class="ff7">A</span>=rand(4,5); </div><div class="t m0 xb h9 y52 ff4 fs1 fc0 sc0 ls0 ws0"> >><span class="ff7">A</span>(:,3)=(1:4)<span class="ff1">’</span> %<span class="ff7">引</span>用的<span class="ff7">为</span>一列向量 </div><div class="t m0 xb h8 y53 ff4 fs1 fc0 sc0 ls0 ws0"> *<span class="ff7">A</span>(m,:) 矩阵<span class="_ _b"> </span><span class="ff7">A<span class="_ _c"> </span></span>的<span class="_ _c"> </span>m<span class="_ _b"> </span>行所有<span class="ff7">元素</span> </div><div class="t m0 xb h8 y54 ff4 fs1 fc0 sc0 ls0 ws0"> >><span class="ff7">A</span>(4,:)=2:6 </div><div class="t m0 xb h8 y55 ff4 fs1 fc0 sc0 ls0 ws0"> *<span class="ff7">A</span>(:) 矩阵<span class="_ _b"> </span><span class="ff7">A<span class="_ _c"> </span></span>所有<span class="ff7">元素</span> </div><div class="t m0 xb h8 y56 ff4 fs1 fc0 sc0 ls0 ws0"> >><span class="ff7">A</span>(:) </div></div><div class="pi" data-data='{"ctm":[1.611639,0.000000,0.000000,1.611639,0.000000,0.000000]}'></div></div>

<div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62523db16caf596192640b4b/bg5.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">- 5 - </div><div class="t m0 xb h8 y2 ff4 fs1 fc0 sc0 ls0 ws0">2) 变<span class="ff7">维</span> </div><div class="t m0 x27 h8 y4 ff4 fs1 fc0 sc0 ls0 ws0">*reshape(<span class="ff7">X</span>,M,N,P,..)将<span class="ff7">已知</span>矩阵<span class="_ _b"> </span><span class="ff7">X<span class="_ _c"> </span></span>变<span class="ff7">为<span class="_ _c"> </span></span>M*N*P..矩阵 </div><div class="t m0 x27 h5 y44 ff4 fs1 fc0 sc0 ls0 ws0"> >>a=1:12; </div><div class="t m0 x27 h5 y46 ff4 fs1 fc0 sc0 ls0 ws0"> >>b=reshape(a,2,6) </div><div class="t m0 x27 h9 y48 ff4 fs1 fc0 sc0 ls0 ws0">*用<span class="ff1">’</span>:<span class="ff1">’<span class="ff7">引</span></span>用 </div><div class="t m0 x27 h5 y49 ff4 fs1 fc0 sc0 ls0 ws0"> >>a=zeros(3,4); </div><div class="t m0 x27 h8 y4a ff4 fs1 fc0 sc0 ls0 ws0"> >>a(:)=1:12 %Matlab<span class="_ _b"> </span>矩阵<span class="ff7">元素按</span>列存<span class="ff7">储</span> </div><div class="t m0 x27 h5 y4b ff4 fs1 fc0 sc0 ls0 ws0"> >>a(4) </div><div class="t m0 x27 h5 y4c ff4 fs1 fc0 sc0 ls0 ws0"> >>a(1,2) </div><div class="t m0 x2 h9 y4e ff4 fs1 fc0 sc0 ls0 ws0"> 3) <span class="ff1">‘</span>.<span class="ff1">’</span>运算 <span class="ff7">同</span>类型矩阵<span class="ff7">元素</span>对<span class="ff7">应元素</span>运算 </div><div class="t m0 x2 h9 y4f ff4 fs1 fc0 sc0 ls0 ws0"> * <span class="ff1">“</span>.*<span class="ff1">”</span> ,<span class="ff1">“</span>.<span class="ff7">/<span class="ff1">”</span></span>与<span class="ff1">”</span>.<span class="ff7">\<span class="ff1">’</span></span>运算 </div><div class="t m0 x2 h5 yc ff4 fs1 fc0 sc0 ls0 ws0"> >> a=[1 2 3;2 3 4;3 4 5]; </div><div class="t m0 x28 h5 ye ff4 fs1 fc0 sc0 ls0 ws0">>> b=[1 1 1;2 2 2;3 3 3]; </div><div class="t m0 x28 h8 y10 ff4 fs1 fc0 sc0 ls0 ws0">>> a.*b %a,b<span class="_ _b"> </span>对<span class="ff7">应元素</span>相<span class="ff7">乘</span> </div><div class="t m0 x28 h8 y12 ff4 fs1 fc0 sc0 ls0 ws0">>> a*b %a,b<span class="_ _b"> </span>矩阵相<span class="ff7">乘</span> </div><div class="t m0 x28 h8 y14 ff4 fs1 fc0 sc0 ls0 ws0">>> a.<span class="ff7">\</span>b %a<span class="_ _b"> </span>对<span class="ff7">应元素做</span>分母 </div><div class="t m0 x28 h8 y16 ff4 fs1 fc0 sc0 ls0 ws0">>> a.<span class="ff7">/</span>b %b<span class="_ _b"> </span>对<span class="ff7">应元素做</span>分母 </div><div class="t m0 x25 h9 y18 ff4 fs1 fc0 sc0 ls0 ws0">* <span class="ff1">“</span>.<span class="ff7">^<span class="ff1">”</span></span>与<span class="ff7">^</span> </div><div class="t m0 x28 h5 y1a ff4 fs1 fc0 sc0 ls0 ws0">>> b=[1 1 1;2 2 2;3 3 3]; </div><div class="t m0 x28 h8 y1c ff4 fs1 fc0 sc0 ls0 ws0">>> b<span class="ff7">^</span>3 </div><div class="t m0 x1c h8 y1e ff4 fs1 fc0 sc0 ls0 ws0"> >> b.<span class="ff7">^</span>3 </div><div class="t m0 x1c h8 y20 ff4 fs1 fc0 sc0 ls0 ws0"> >> b*b*b %<span class="ff7">等</span>于<span class="_ _b"> </span>b<span class="ff7">^</span>3 </div><div class="t m0 x1c h8 y22 ff4 fs1 fc0 sc0 ls0 ws0"> 二>程序设<span class="ff7">计</span> </div><div class="t m0 x1c h9 y24 ff4 fs1 fc0 sc0 ls0 ws0"> 1) <span class="ff7">注释符</span> <span class="ff1">“</span>%<span class="ff1">”</span>,不<span class="ff7">为<span class="_ _b"> </span></span>Matlab<span class="_ _b"> </span>执行,M<span class="_ _c"> </span>文件中<span class="ff7">第</span>一<span class="ff7">段注释为</span>文件的<span class="ff7">帮助</span>文</div><div class="t m0 x2 h8 y26 ff7 fs1 fc0 sc0 ls0 ws0">档<span class="ff4">,在<span class="_ _b"> </span>Commad Window<span class="_ _c"> </span>中输入<span class="_ _c"> </span>help<span class="_ _b"> </span></span>可见<span class="ff4"> </span></div><div class="t m0 x29 h8 y28 ff4 fs1 fc0 sc0 ls0 ws0">2) 控制<span class="ff7">语句</span> </div><div class="t m0 x2a h8 y2a ff4 fs1 fc0 sc0 ls0 ws0"> * <span class="ff7">循</span>环<span class="ff7">语句</span> </div><div class="t m0 x2a h5 y2c ff4 fs1 fc0 sc0 ls0 ws0"> for i=1:n while expression </div><div class="t m0 x2a h8 y2e ff4 fs1 fc0 sc0 ls0 ws0"> <span class="ff7">…</span>. statements </div><div class="t m0 x2a h5 y30 ff4 fs1 fc0 sc0 ls0 ws0"> end end </div><div class="t m0 x2a h9 y32 ff4 fs1 fc0 sc0 ls0 ws0"> <span class="ff7">例</span>:<span class="ff7">求<span class="_ _b"> </span></span>1<span class="ff7">^</span>2+2<span class="ff7">^</span>2+3<span class="ff7">^</span>2+<span class="ff1">…</span>+1<span class="ff7">00^</span>2 </div><div class="t m0 x2a ha y34 ff4 fs1 fc0 sc0 ls0 ws0"> 法<span class="_ _b"> </span>1: >><span class="ff1 fs4"> <span class="_"> </span> <span class="_"> </span></span>sum=<span class="ff7">0</span>; </div><div class="t m0 x2b h8 y36 ff4 fs1 fc0 sc0 ls0 ws0">>> for i=1:1<span class="ff7">00</span> </div><div class="t m0 x2a h5 y38 ff4 fs1 fc0 sc0 ls0 ws0"> sum=sum+i*i; </div><div class="t m0 x2a h5 y3a ff4 fs1 fc0 sc0 ls0 ws0"> end </div><div class="t m0 x4 h5 y3c ff4 fs1 fc0 sc0 ls0 ws0">>> sum </div><div class="t m0 x2a h8 y3e ff4 fs1 fc0 sc0 ls0 ws0"> 法<span class="_ _b"> </span>2: >>a=1:1<span class="ff7">00</span>; </div><div class="t m0 x2a h9 y50 ff4 fs1 fc0 sc0 ls0 ws0"> >>sum=a*a<span class="ff1">’</span> </div><div class="t m0 x2a h5 y51 ff4 fs1 fc0 sc0 ls0 ws0"> 法<span class="_ _b"> </span>3: >>n=1; </div><div class="t m0 x2a h8 y52 ff4 fs1 fc0 sc0 ls0 ws0"> >>sum=<span class="ff7">0</span>; </div><div class="t m0 x2a h8 y53 ff4 fs1 fc0 sc0 ls0 ws0"> >> while n<span class="ff7"><</span>=1<span class="ff7">00</span> </div><div class="t m0 x2a h5 y54 ff4 fs1 fc0 sc0 ls0 ws0"> sum=sum+n*n; </div><div class="t m0 x2a h5 y55 ff4 fs1 fc0 sc0 ls0 ws0"> n=n+1; </div><div class="t m0 x2c h5 y56 ff4 fs1 fc0 sc0 ls0 ws0">end </div></div><div class="pi" data-data='{"ctm":[1.611639,0.000000,0.000000,1.611639,0.000000,0.000000]}'></div></div>