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 <p id="2N2SR6HM"> <strong>常用的MATLAB数学建模工具箱</strong></p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2F41f10e9ej00sdfcw10015d200ha006ng00ih0073.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p id="2N2SR6I9"> <strong>1. MATLAB基本命令</strong></p><p id="2N2SR6IB">命令窗口</p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2Fec9bf583j00sdfcw1001pd200ld00azg00ih009h.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p>M文件</p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2F5121af92j00sdfcw20020d200lv007wg00ih006n.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p id="2N2SR6IU">要运行M文件，则函数名和文件名必须一致</p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2Fdf37a443p00sdfcw20002d2005j0043g00ih00dn.png&thumbnail=660x&quality=80&type=jpg"/><br/></p><p>常用变量表</p><p id="2N2SR6J9"><strong>特殊变量表</strong></p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2F0959ab6cj00sdfcw30016d200fp00c2g00ih00e6.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p id="2N2SR6JK"><strong>数学运算符号及标点符号</strong></p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2F1f5c4ac6j00sdfcw4000od200e9008ag00ih00aq.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p id="2N2SR6JV"><strong>数学函数</strong></p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2F7aa4bb2ej00sdfcw40013d200gh0091g00ih00a4.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p id="2N2SR6KF"> <strong>2. MATLAB优化工具箱简介</strong></p><p id="2N2SR6KH">线性规划问题</p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2F85e19daaj00sdfcw5000sd200kf006ag00ih005o.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p id="2N2SR6KQ"><strong>函数linprog格式</strong></p><p id="2N2SR6KR">[x,fval,exitflag]=linprog(f,A,b,Aeq,beq,lb,ub,x0,options)<br/>注：exitflag&gt;0表示函数收敛于解x<br/>exitflag=0表示超过函数估计值或迭代的最大数字。<br/>options为指定优化参数选项。</p><p id="2N2SR6KS"><strong>示例</strong></p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2F51b48e38j00sdfcw5000rd200of008fg00ih006d.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p id="2N2SR6L7"><strong>M文件代码</strong></p><p id="2N2SR6L8">c=[-0.4 -0.28 -0.32 -0.72 -0.64 -0.6];<br/>A=[0.01 0.01 0.01 0.03 0.03 0.03;0.02 0 0 0.05 0 0;0 0.02 0 0 0.05 0;0 0 0.03 0 0 0.08];<br/> b=[850;700;100;900];<br/> Aeq=[]; beq=[];<br/> lb=[0;0;0;0;0;0]; ub=[];<br/>[x,fval]=linprog(c,A,b,Aeq,beq,lb,ub)</p><p>非线性规划问题</p><p id="2N2SR6LA"><strong>定义</strong>：如果目标函数或约束条件中<strong>至少有一个是非线性函数</strong>时的最优化问题就叫做非线性规划问题．</p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2F6e8888ffj00sdfcw6001gd200p9008ig00ih0067.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2F143b60c0j00sdfcw70011d200me005jg00ih004k.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2F7197e444j00sdfcw8000xd200lu005sg00ih004v.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p>极小化极大化问题</p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2F8e68badfj00sdfcw8000kd200kl004yg00ih004f.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p>最小二乘最优问题</p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2Faj00sdfcwa000vd200k7009hg00ih008n.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2Fa4dbccd4j00sdfcwb000td200l8005eg00ih004o.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p id="2N2SR6N5">非线性方程(组)求解</p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2F94fa9ea4j00sdfcwc000td200ig008hg00ih008h.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p id="2N2SR6NH"> <strong>3. 统计工具箱简介</strong></p><p id="2N2SR6NJ">概率分布 参数估计 描述统计 回归分析工具箱</p><p id="2N2SR6NO"> <strong>4. 求解微分方程的命令</strong></p><p id="2N2SR6NQ">显式常微分方程</p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2F786f3411j00sdfcwd000xd200ky005eg00ih004r.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2Fcc91a9e1j00sdfcwe0011d200ln00b4g00ih009h.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p id="2N2SR6OA"><strong>示例</strong></p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2Fe5e29ea8j00sdfcwe000ld200ls0076g00ih0062.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p class="f_center"> <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2024%2F0513%2Fbaedeb9bj00sdfcwf000ad200bu0049g00ih006m.jpg&thumbnail=660x&quality=80&type=jpg"/><br/></p><p id="2N2SR6OR">建立m-文件<strong>vdp1000.m</strong>如下：</p><p id="2N2SR6OS">function dy=vdp1000(t,y)<br/> dy=zeros(2,1);<br/> dy(1)=y(2);<br/> dy(2)=1000*(1-y(1)^2)*y(2)-y(1);<br/><strong>窗口</strong></p><p id="2N2SR6OT">[T,Y]=ode15s('vdp1000',[0 3000],[2 0]);<br/>plot(T,Y(:,1),'-')<br/>内容源于：CSDNHyacinth＆<br/></p>