文档介绍：数学实验答案Chapter1Page20,ex1(5)等于[exp(1),exp(2);exp(3),exp(4)](7)3=1*3,8=2*4(8)a为各列最小值,b为最小值所在的行号(10)1>=4,false,2>=3,false,3>=2,ture,4>=1,ture(11)答案表明:编址第2元素满足不等式(30>=20)和编址第4元素满足不等式(40>=10)(12)答案表明:编址第2行第1列元素满足不等式(30>=20)和编址第2行第2列元素满足不等式(40>=10)Page20,ex2(1)a,b,c的值尽管都是1,但数据类型分别为数值,字符,逻辑,注意a与c相等,但他们不等于b(2)double(fun)输出的分别是字符a,b,s,(,x,)的ASCII码Page20,ex3>>r=2;p=;n=12;>>T=log(r)/n/log(1+*p)Page20,ex4>>x=-2::2;f=x.^4-2.^x;>>[fmin,min_index]=min(f)最小值最小值点编址>>x(min_index)ans=>>[f1,x1_index]=min(abs(f))求近似根--绝对值最小的点f1==24>>x(x1_index)ans=->>x(x1_index)=[];f=x.^4-2.^x;删去绝对值最小的点以求函数绝对值次小的点>>[f2,x2_index]=min(abs(f))求另一近似根--函数绝对值次小的点f2==65>>x(x2_index)ans=,ex5>>z=magic(10)z=929918156774515840988071416735557644148188202254566370478587192136062697128869325296168755234172476839042492633652358289914830323966796139597293138457210129496783537444653111810077843643502759>>sum(z)>>sum(diag(z))>>z(:,2)/sqrt(3)>>z(8,:)=z(8,:)+z(3,:)Chapter2Page45ex1先在编辑器窗口写下列M函数,[xbar,s]=ex2_1(x)n=length(x);xbar=sum(x)/n;s=sqrt((sum(x.^2)-n*xbar^2)/(n-1));例如>>x=[81706551766690876177];>>[xbar,s]=ex2_1(x)Page45ex2s=log(1);n=0;whiles<=100n=n+1;s=s+log(1+n);endm=nPage40ex3clear;F(1)=1;F(2)=1;k=2;x=0;e=1e-8;a=(1+sqrt(5))/2;whileabs(x-a)>ek=k+1;F(k)=F(k-1)+F(k-2);x=F(k)/F(k-1);enda,x,k计算至k=21可满足精度Page45ex4clear;tic;s=0;fori=1:1000000s=s+sqrt(3)/2^i;ends,toctic;s=0;i=1;whilei<=1000000s=s+sqrt(3)/2^i;i=i+1;ends,toctic;s=0;i=1:1000000;s=sqrt(3)*sum(1./2.^i);s,tocPage45ex5t=0:24;c=[15141414141516182022232528...313231292725242220181716];plot(t,c)Page45ex6(1)x=-2::2;y=x.^2.*sin(x.^2-x-2);plot(x,y)y=inline('x^2*sin(x^2-x-2)');fplot(y,[-22])(2)参数方法t=linspace(0,2*pi,100);x=2*cos(t);y=3*sin(t);plot(x,y)(3)x=-3::3;y=x;[x,y]=meshgrid(x,y);z=x.^2+y.^2;surf(x,y,z)(4)x=-3::3;y=-3::13;[x,y]=meshgrid(x,y);z=x.^4+3*x.^2+y.^2-2*x-2*y-2*x.^2.*y+6;surf(x,y,z)(5)t=0::2*pi;x=sin(t);y=cos(t);z=cos(2*t);plot3(x,y,z)(6)theta=linspace(0,2*p