matlab基础与应用教程答案

第1章一、思考题4.（1）B=A(2:5,1:2:5)（2）A(7)=[]（3）A=A+30（4）size(A)（5）t(find(t==0))=eps（6）t=reshape(x,3,4)（7）abs('matlab')（8）char(93)5.A=[97,67,34,10;-78,75,65,5;32,5,-23,-59;0,-12,54,7](1)B=A(1:3,:)C=A(:,1:2)D=A(2:4,3:4)E=B*C(2)A(find(A>=50&A<=100))二、实验题1.x=-74/180*pi;y=-27/180*pi;sin(x*x+y*y)/sqrt(tan(abs(x+y)))+pi2.a=-3.0:0.1:3.0;exp(-0.3*a).*sin(a+0.3)3.x=[2,4;-0.45,5];log(x+sqrt(1+x.*x))/24.A=[3,54,2;34,-45,7;87,90,15];B=[1,-2,67;2,8,74;9,3,0];（1）A*Bans=12943241977-407-105240259112489A.*Bans=3-10813468-3605187832700（2）A^3ans=-28917240246-4368137883-2591012766917133325250438673A.^3ans=27157464839304-911253436585037290003375（3）A/Bans=-5.88455.3549-0.20286.3554-5.65964.3293-6.63256.20789.0241B/Aans=30.285519.2643-8.561433.439421.1547-9.3974-0.7443-0.39380.2830（4）[A,B]ans=35421-26734-4572874879015930[A([1,3],:);B^2]ans=3542879015600183-816842827261568255.a=1+2i;b=3+4i;c=exp(pi*i/6)c=0.8660+0.5000ic+a*b/(a+b)ans=1.6353+1.8462i第2章一、思考题3.s=0;forn=0:63s=s+2^n;enddisp(s)n=0:63;s=sum(2.^n)二、实验题1.x=input('输入一个四位整数：');y=[fix(x/1000),mod(fix(x/100),10),mod(fix(x/10),10),mod(x,10)]z=mod((y+7),10)x=z(3)*1000+z(4)*100+z(1)*10+z(2)2.gh=input('输入工号');h=input('输入工时');dj=84;ifh>120gz=dj*120+1.15*dj*(h-120);elseifh<60gz=dj*h-700;elsegz=dj*h;endformatbank;display([gh,gz])3.循环结构n=input('inputn:');s=0;fork=1:ns=s+1/k^2;enddisplay(sqrt(s*6))向量运算n=input('inputn:');k=1:n;display(sqrt(sum(1./k.^2)*6))4.y=0;k=0;whiley<3k=k+1;y=y+1/(2*k-1);enddisplay([k-1,y-1/(2*k-1)])5.x0=0;x=1;k=0;a=input('a=');b=input('b=');whileabs(x-x0)>=1e-5&&k<500x0=x;x=a/(b+x0);k=k+1;enddisplay([k,x]);display([(-b+sqrt(b^2+4*a))/2,(-b-sqrt(b^2+4*a))/2]);6.y=fun(40)/(fun(30)+fun(20))（1）函数文件fun.mfunctionf=fun(n)f=n+log(n^2+5);（2）函数文件fun.mfunctionf=fun(n)a=1:n;f=sum(a.*(a+1));第3章一、思考题4.t=0:0.01:1.5;y=sqrt(3)/2*exp(-4*t).*sin(4*sqrt(3)*t+pi/3);5.x=-10:0.01:10;y=linspace(-6,6,size(x,2))z=x.^3+3*x.*y.^2;plot3(x,y,z)6.x=100:100:400;y=100:100:400;z=[636,697,624,478;698,712,630,478;680,674,598,412;662,626,552,334];[X,Y]=meshgrid(x,y);mesh(X,Y,z)二、实验题1.（1）x=-10:0.01:10;plot(x,x-x.^3/3/2)（2）plot(x,exp(-x.*x/2)/2/pi)（3）x=-8:0.01:8;plot(x,sqrt((64-x.*x)/2))（4）t=0:pi/100:6*pi;plot(t.*sin(t),t.*cos(t))2.（1）x1=linspace(0,1,100);y1=2*x1-0.5;t=linspace(0,pi,100);x=sin(3*t).*cos(t);y=sin(3*t).*sin(t);plot(x1,y1,'r-',x,y,'b:');text(0.4,1,'y=2x-0.5');text(-0.4,0.5,'x=sin(3t)cos(t)');text(-0.4,0.3,'y=sin(3t)sin(t)');（2）subplot(1,2,1);scatter(x1,y1,10)title('y=2x-0.5');subplot(1,2,2);scatter(x,y,10)3.subplot(1,2,1);x=1:1:100;y=sin(1./x);plot(x,y)subplot(1,2,2);fplot('sin(1/x)',[1,100])4.subplot(2,2,1);bar(t,y);subplot(2,2,2);stairs(t,y);subplot(2,2,3);stem(t,y)subplot(2,2,4);semilogy(t,y);5.theta=linspace(-pi,pi,100);ro=5.*cos(theta)+4;polar(theta,ro);fi=linspace(0,2*pi,100);a=1r=a.*(1+cos(fi));polar(fi,r);6.t=0:pi/20:2*pi;x=exp(-t./20).*cos(t);y=exp(-t./20).*sin(t);z=t;plot3(x,y,z);t=0:0.01:1;x=t;y=t.^2;z=t.^3;plot3(x,y,z);7.x=-30:0.1:0;y=0:0.1:30;[x,y]=meshgrid(x,y);z=10.*sin(sqrt(x.^2+y.^2))./sqrt(1+x.^2+y.^2);meshc(x,y,z);8.x=linspace(-3,3,100);y=linspace(-3,3,100);[xy]=meshgrid(x,y);fxy=-5./(1+x.^2+y.^2);i=find(abs(x)<=0.8&abs(y)<=0.5);fxy(i)=NaN;surf(x,y,fxy)9.u=linspace(1,10,100);v=linspace(-pi,pi,100);[u,v]=meshgrid(u,v);x=3.*u.*sin(v);y=2.*u.*cos(v);z=4*u.^2;x=3*u.*sin(v);y=2*u.*cos(v);z=4*u.^2;surf(x,y,z);shadinginterp;light('position',[1,0,1]);10.t=0:pi/100:2*pi;y=sin(t);comet(t,y)第4章一、思考题5.（1）A=eye(3);（2）C=100+(200-100)*rand(5,6);（3）D=1+sqrt(0.2)*randn(1,500);（4）E=ones(size(A));（5）A=A+30*eye(size(A));（6）B=diag(diag(A))二、实验题1.P=pascal(5);H=hilb(5);Dp=det(P);Dh=det(H);Kp=cond(P);Kh=cond(H);P矩阵的性能更好，因为Kp较小2.A=[1,-1,2,3;0,9,3,3;7,-5,0,2;23,6,8,3]B=[3,pi/2,45;32,-76,sqrt(37);5,72,4.5e-4;exp(2),0,97]A1=diag(A);B1=diag(B);A2=triu(A);B2=triu(B);A3=tril(A);B3=tril(B);rA=rank(A);rB=rank(B);nA=norm(A);nb=norm(B);cA=cond(A);cB=cond(B);3.A=[31,1,0;-4,-1,0;4,-8,-2]；[V,D]=eig(A);4.A=diag([-1,-1,-1,-1],-1)+diag([-1,-1,-1,-1],1)+diag([2,2,2,2,2])b=[1,0,0,0,0]';x1=inv(A)*b;x2=A\b;[L,U]=lu(A);x3=U\(L\b);[Q,R]=qr(a);[Q,R]=qr(A);x4=R\(Q\b)R=chol(A);x5=R\(R'\b)5.B=sparse(A);x1=inv(B)*b;x2=B\b;[L,U]=lu(B);x3=U\(L\b);第5章一、思考题3.A=randn(10,5);mean(A)std(A)max(max(A))min(min(A))sum(A,2)sum(sum(A))sort(A,1)sort(A,2,'descend')二、实验题1.A=rand(1,30000);mean(A)std(A)max(A)min(A)size(find(A>0.5))/size(A)2.h=[466,715,950,1422,1635];w=[7.04,4.28,3.40,2.52,2.13];hh=[500,900,1500];ww=interp1(h,w,hh,'spline')3.x=linspace(1,10,50);y=log(x);f=polyfit(x,y,5);yy=polyval(f,x);plot(x,y,'r-',x,yy,'g.')4.N=64;%采样点数T=5;%采样时间终点t=linspace(0,T,N);%给出N个采样时间ti(I=1:N)x=3*exp(-t);%求各采样点样本值xdt=t(2)-t(1);%采样周期f=1/dt;%采样频率(Hz)X=fft(x);%计算x的快速傅立叶变换XF=X(1:N/2+1);%F(k)=X(k)(k=1:N/2+1)f=f*(0:N/2)/N;%使频率轴f从零开始plot(f,abs(F),'-*')%绘制振幅-频率图xlabel('Frequency');ylabel('|F(k)|')5.（1）p1=[12007];p2=[1-2];p3=[10051];p12=conv(p1,p2);p=p12+[zeros(1,size(p12,2)-size(p3,2)),p3];roots(p)（2）A=[-1,4,3;2,1,5;0,5,6];Px=polyval(p,A)Pxm=polyvalm(p,A)6.（1）z=fzero('3*x-sin(x)+1',0)（2）建立函数文件myfun.mfunctionF=myfun(X)x=X(1);y=X(2);F(1)=x*x+y*y-9;F(2)=x+y-1;在命令窗口中输入以下命令：x=fsolve(@myfun,[3,0]',optimset('Display','off'))第6章一、思考题2.fx=inline('1./(1+x.^2)');[I,n]=quad(fx,-100000,100000,1e-3);[I,n]=quadl(fx,-100000,100000,1e-3);x=-100000:0.01:100000;y=1./(1+x.*x);trapz(x,y);3.(1)fx=inline('-2*y+2*x*x+2*x');[t,y]=ode23(fx,[0,0.5],1)(2)fx=inline('y-exp(x)*cos(x)');[t,y]=ode23(fx,[0,3],1)二、实验题1.forx=1:3fx=[x,x^2,x^3;1,2*x,3*x;0,2,6*x];diff(fx)end2.（1）x=0:0.01:1;y=x.^10+10.^x+1./log10(x);dy=diff(y)/0.01;（2）x=0:0.01:1;y=log(1+x);dy=diff(y,2)/0.01;plot(x(1:99),dy)3.（1）fx=inline('x.^2.*sqrt(2*x.*x+3)');quad(fx,1,5)（2）fx=inline('x./sin(x).^2');quad(fx,pi/4,pi/3)（3）fx=inline('abs(cos(x+y))');dblquad(fx,0,pi,0,pi)（4）symsxy;fx=x*y;int(int(fx,y^2,y+2),-1,2)x的积分区间为【0，2】时fx=inline('x.*y');dblquad(fx,0,2,-1,2)4.x=0.3:0.2:1.5;y=[0.3895,0.6598,0.9147,1.1611,1.3971,1.6212,1.8325];trapz(x,y)5.（1）yp=inline('-(1.2+sin(10*x))*y');[t,y]=ode23(yp,[0,5],1);（2）令，则可写出原方程的状态方程形式：>建立函数文件ztfun.mfunctiony=ztfun(t,x)b=[0;0;cos(t)];y=[0,1,0;0,0,1;-1/(3+sin(t)),-1,5*cos(2*t)/(t+1)^2]*x+b;解微分方程组[t,y]=ode23(@ztfun,[0,5],[1;0;2]);6.建立函数文件ztfun.mfunctionyy=ztfun(t,y)yy=[y(2)*y(3);-y(1)*y(3);-0.51*y(1)*y(2)];解微分方程组[t,y]=ode23(@ztfun,[0,5],[0;1;1])第7章一、思考题3.（1）数值积分fx=inline('exp(x).*(1+exp(x)).^2');quad(fx,0,log(2))符号积分f=sym('exp(x)*(1+exp(x))^2');v=int(f,0,log(2));eval(v)（2）略二、实验题1.A=sym('[1,2,3;x,y,z;3,2,1]')rank(A)inv(A)det(A)2.(1)y=sym('sqrt(x+sqrt(x+sqrt(x)))');y1=diff(y)y2=diff(y,'x',2)(2)symsxy;fxy=sin(x^2*y)*exp(-x^2-y);diff(diff(fxy,x),y)3.(1)symsxint(1/(1+x^4))(2)symsxtint((-2*x*x+1)/(2*x*x-3*x+1)^2,x,cos(t),exp(2*t))4.symsnxsymsum(1/(2*n+1)/(2*x+1)^(2*n+1),n,0,inf)symsum(1/(2*n+1)/(2*x+1)^(2*n+1),n,0,5)5.(1)symsxtaylor((exp(x)+exp(-x))/2,5,0)(2)symsaxtaylor(exp(-5*x)*sin(3*x+pi/3),5,a)6.(1)x=solve(sym('x^3+a*x+1=0'))(2)[xy]=solve(sym('sqrt(x^2+y^2)-100=0,3*x+5*y-8=0'))7.方程转化为：符号解[y1,y11]=dsolve('Dy=y1,Dy1+y=1-t^2/pi','y(-2)=5,y1(-2)=5','t')数值解编写函数文件ztfun.mfunctionyy=ztfun(t,y)yy=[y(2);1-t^2/pi-y(1)];在命令窗口输入以下命令[t,y]=ode45(@ztfun,[-2,7],[-5;5]);t=linspace(-2,7,49)y2=y8.[x,y]=dsolve('Dx=3*x+4*y,Dy=-4*x+3*y','x(0)=0,y(0)=1')第9章二、实验题1.（1）新建一个BlankGUI。（2）在窗口上添加一个StaticText、一个EditText，一个PushBotton，两个CheckBox，一组RadioButton。各控件的属性设置如表9.1所示。表9.1 界面控件属性控件属性名属性值静态文本框String实验一：编辑框String按钮String设置字体大小单选按钮1Stringred单选按钮2Stringyellow单选按钮3Stringblue单选按钮4StringblackValue1.0复选框1String倾斜复选框2String加粗（3）在按钮的Callback函数中添加以下代码：s=eval(get(handles.edit1,'String'));set(handles.text1,'FontSize',s);（4）在复选框1的Callback函数中添加以下代码：if(get(hObject,'Value')==get(hObject,'Max'))set(handles.text1,'FontAngle','italic');elseset(handles.text1,'FontAngle','normal');end在复选框2的Callback函数中添加以下代码：if(get(hObject,'Value')==get(hObject,'Max'))set(handles.text1,'FontWeight','bold');elseset(handles.text1,'FontAngle','normal');end（5）在单选按钮组的SelectionChangeFcn函数中添加以下代码：set(handles.text1,'ForegroundColor',get(eventdata.NewValue,'string'));2.（1）新建一个BlankGUI。（2）用菜单编辑器编辑菜单，各菜单项属性如表9.2.表9.2 菜单项属性菜单项Label属性值Tag属性值MenuLineLabelm_lineHelpHelpm_helpLineMenuItemLineStyleLineStylem_linestyleLineWidthLineWidthm_linewidthLineColorLineColormlinecolorHelpMenuItemAboutAboutm_about（3）绘图。在窗口的OpeningFcn函数添加以下代码：globalh;t=0:0.01:6;h=plot(t.*sin(t),t.*cos(t))（4）在LineStyle菜单项的Callback函数中添加以下代码：globalh;set(h,'LineStyle','-.');在LineWidth菜单项的Callback函数中添加以下代码：globalh;set(h,'LineWidth',2);在LineColor菜单项的Callback函数中添加以下代码：globalh;set(h,'color','red');在About菜单项的Callback函数中添加以下代码：msgbox('HelpItem');3.t=0:pi/20:6*pi;a=2;b=3;r=a+b*t;h_draw=polar(t,r,'-*');h_menu=uicontextmenu;%½¨Á¢¿ì½Ý²Ëµ¥%½¨Á¢²Ëµ¥Ïîuimenu(h_menu,'Label','red','Call','set(h_draw,''Color'',''red'');');uimenu(h_menu,'Label','yellow','Call','set(h_draw,''Color'',''yellow'');');uimenu(h_menu,'Label','blue','Call','set(h_draw,''Color'',''blue'');');set(h_draw,'UIContextMenu',h_menu);%½«¸Ã¿ì½Ý²Ëµ¥ºÍÇúÏ߶ÔÏóÁªÏµÆðÀ´4.（1）新建一个BlankGUI。（2）在窗口上添加三个StaticText、三个EditText，一个PushBotton，一个坐标轴对象Axes。各控件的属性设置如表9.3所示。表9.3 界面控件属性控件属性名属性值StaticTexttext1Stringa：text1Stringb：text1Stringn：EditTextedit1Stringedit2Stringedit3Stringpushbotton1String绘图Axes1width100height25（3）在按钮pushbutton1的Callback函数中添加以下代码：t=0:pi/20:6*pi;a=eval(get(handles.edit1,'String'));b=eval(get(handles.edit2,'String'));n=eval(get(handles.edit3,'String'));r=a.*cos(b+n.*t);polar(handles.axes1,t,r);第10章二、实验题1.建立模型exercise10_1.mdl（1）双击Gain模块，打开FunctionBlockParameters进行设置。设置完成后，单击模型编辑窗口的StartSimulation按钮，观察曲线。（2）选择MathOperation模块库的SlideGain模块替代Gain模块2.略3.Scope的双输入实现方法：双击Scope模块，打开Scope示波器窗口，单击该窗口工具栏的Parameters按钮（左数第二个），在打开的对话框的General选项卡的Numbersofaxes:后的编辑框中输入2，然后单击OK按钮返回，即可看到模型中的Scope模块增加了一个输入口4.（1）先建立如下模型（2）建立子系统。选中除输入输出模块外其他模块，执行Edit菜单的CreateSubsystem命令。（3）封装子系统。选中子系统模块，执行Edit菜单的MaskSubsystem命令。在MaskEditor对话框的Parameters选项卡中的DialogParameters栏内增加三个变量，单击OK按钮返回。5.（1）建立S函数subsection.mfunction[sys,x0,str,ts]=subsection(t,x,u,flag)switchflagcase0[sys,x0,str,ts]=mdlInitializeSizes;case3sys=mdlOutputs(t,x,u);case{1,2,4,9}sys=[];otherwiseerror('UnhandledFlag',num2str(flag));endfunction[sys,x0,str,ts]=mdlInitializeSizes()sizes=simsizes;sizes.NumContStates=0;sizes.NumDiscStates=0;sizes.NumOutputs=1;sizes.NumInputs=1;sizes.DirFeedthrough=1;sizes.NumSampleTimes=1;sys=simsizes(sizes);x0=[];str=[];ts=[-1,0];functionsys=mdlOutputs(t,x,u)ifu>=0&u<2sys=u*u;elseifu>=2&u<5sys=4;elseifu>=5&u<7sys=14-2*u;elsesys=0;end（2）模块的封装与测试参见教材Page202第11章二、实验题2.(1)建立EXCEL文件，如气温.xls(2)SpreadsheetLink的安装与启动参见教材P206（3）在Excel中选中需要的数据，单击SpreadsheetLink工具栏的“putmatrix”按钮，指定导入MATLAB工作空间的变量名。（4）单击SpreadsheetLink工具栏中的“wizard”按钮，弹出“MATLABFunctionWizard”对话框。在“Selectacategory”栏内选择matlab\polyfun类后，在“Selectafunction”栏选择spline函数，在“Selectafunctionsignature”栏内中选中spline(x,y,xx)，弹出“FunctionArguments”对话框。在对话框中的Inputs栏X右边的展开按钮，然后选中EXCEL表中的第1列数据（除标题行），按Enter键确认，返回“FunctionArguments”对话框。单击对话框Inputs栏右部的下拉条，使变量变为Y，同样的方式设定Y的值，接着设定XX变量的值。然后单击Optionaloutputcell(s)右边的展开按钮,在Excel表中选中输出数据使用的单元格，返回对话框后单击OK按钮，完成计算。3.clearallfid=fopen('exercise9_1.m','r');textall=fscanf(fid,'%c',inf);ch=zeros(26,1);forn=1:size(textall,2)ifisletter(textall(n))iftextall(n)>='a'&&textall(n)<='z'textall(n)=char(textall(n)-('a'-'A'));endm=textall(n)-'A'+1;ch(m)=ch(m)+1;endend4.(1)编辑c源程序exercise11_4.c，代码如下：#include<stdio.h>#include<string.h>/*Forstrcmp()*/#include<stdlib.h>/*ForEXIT_FAILURE,EXIT_SUCCESS*/#include<math.h>#include"mat.h"#defineBUFSIZE256#definek139#definek271intmain(){MATFile*pmat;mxArray*pa1,*pa2,*pa3;doubledata[k1][k2];constchar*file="mat11_4.mat";charstr[BUFSIZE];intstatus;intn1,n2;for(n1=0;n1<k1;n1++)for(n2=0;n2<k2;n2++)data[n1][n2]=pow((n1+1.0)*(n2+1),1/3.0);printf("Creatingfile%s...\n\n",file);pmat=matOpen(file,"w");if(pmat==NULL){printf("Errorcreatingfile%s\n",file);printf("(Doyouhavewritepermissioninthisdirectory?)\n");return(EXIT_FAILURE);}pa1=mxCreateDoubleMatrix(k1,k2,mxREAL);if(pa1==NULL){printf("%s:Outofmemoryonline%d\n",__FILE__,__LINE__);printf("UnabletocreatemxArray.\n");return(EXIT_FAILURE);}pa2=mxCreateDoubleMatrix(k1,k2,mxREAL);if(pa2==NULL){printf("%s:Outofmemoryonline%d\n",__FILE__,__LINE__);printf("UnabletocreatemxArray.\n");return(EXIT_FAILURE);}memcpy((void*)(mxGetPr(pa2)),(void*)data,sizeof(data));pa3=mxCreateString("MATLAB:thelanguageoftechnicalcomputing");if(pa3==NULL){printf("%s:Outofmemoryonline%d\n",__FILE__,__LINE__);printf("UnabletocreatestringmxArray.\n");return(EXIT_FAILURE);}status=matPutVariable(pmat,"LocalDouble",pa1);if(status!=0){printf("%s:ErrorusingmatPutVariableonline%d\n",__FILE__,__LINE__);return(EXIT_FAILURE);}status=matPutVariableAsGlobal(pmat,"GlobalDouble",pa2);if(status!=0){printf("ErrorusingmatPutVariableAsGlobal\n");return(EXIT_FAILURE);}status=matPutVariable(pmat,"LocalString",pa3);if(status!=0){printf("%s:ErrorusingmatPutVariableonline%d\n",__FILE__,__LINE__);return(EXIT_FAILURE);}memcpy((void*)(mxGetPr(pa1)),(void*)data,sizeof(data));status=matPutVariable(pmat,"LocalDouble",pa1);if(status!=0){printf("%s:ErrorusingmatPutVariableonline%d\n",__FILE__,__LINE__);return(EXIT_FAILURE);}mxDestroyArray(pa1);mxDestroyArray(pa2);mxDestroyArray(pa3);if(matClose(pmat)!=0){printf("Errorclosingfile%s\n",file);return(EXIT_FAILURE);}pmat=matOpen(file,"r");if(pmat==NULL){printf("Errorreopeningfile%s\n",file);return(EXIT_FAILURE);}pa1=matGetVariable(pmat,"LocalDouble");if(pa1==NULL){printf("ErrorreadingexistingmatrixLocalDouble\n");return(EXIT_FAILURE);}if(mxGetNumberOfDimensions(pa1)!=2){printf("Errorsavingmatrix:resultdoesnothavetwodimensions\n");return(EXIT_FAILURE);}pa2=matGetVariable(pmat,"GlobalDouble");if(pa2==NULL){printf("ErrorreadingexistingmatrixGlobalDouble\n");return(EXIT_FAILURE);}if(!(mxIsFromGlobalWS(pa2))){printf("Errorsavingglobalmatrix:resultisnotglobal\n");return(EXIT_FAILURE);}pa3=matGetVariable(pmat,"LocalString");if(pa3==NULL){printf("ErrorreadingexistingmatrixLocalString\n");return(EXIT_FAILURE);}status=mxGetString(pa3,str,sizeof(str));if(status!=0){printf("Notenoughspace.Stringistruncated.");return(EXIT_FAILURE);}if(strcmp(str,"MATLAB:thelanguageoftechnicalcomputing")){printf("Errorsavingstring:resulthasincorrectcontents\n");return(EXIT_FAILURE);}/*cleanupbeforeexit*/mxDestroyArray(pa1);mxDestroyArray(pa2);mxDestroyArray(pa3);if(matClose(pmat)!=0){printf("Errorclosingfile%s\n",file);return(EXIT_FAILURE);}printf("Done\n");return(EXIT_SUCCESS);}(2)在MATLAB命令窗口输入以下命令编译（假定本机安装的编译器是MicrosoftVisualStudio2005）optsfile=[matlabroot'\bin\win32\mexopts\msvc80engmatopts.bat'];mex('-f',optsfile,'exercise11_4.c')(3)编译完成后，运行exercise11_4.exe5.(1)编辑c源程序exercise11_5.c，代码如下：#include<stdlib.h>#include<stdio.h>#include<string.h>#include"engine.h"#defineBUFSIZE256intmain(){Engine*ep;mxArray*X=NULL,*Y=NULL;charbuffer[BUFSIZE+1];doublex[100],y[100];intn;for(n=0;n<100;n++){x[n]=(n+1)/100.0;y[n]=(n+1)/100.0;}if(!(ep=engOpen("\0"))){fprintf(stderr,"\nCan'tstartMATLABengine\n");returnEXIT_FAILURE;}X=mxCreateDoubleM