数学实验matlab版答案.docx
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数学实验matlab版答案
数学实验matlab版答案
【篇一:
matlab数学实验习题全部答案(胡良剑)】
ge20,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,ex3r=2;p=0.5;n=12;
t=log(r)/n/log(1+0.01*p)
t=
11.5813
%page20,ex4
x=-2:
0.05:
2;f=x.^4-2.^x;
[fmin,min_index]=min(f)
fmin=
-1.3907%最小值
min_index=
54%最小值点编址
x(min_index)
ans=
0.6500%最小值点
[f1,x1_index]=min(abs(f))%求近似根--绝对值最小的点
f1=
0.0328
x1_index=
24
x(x1_index)
ans=
-0.8500
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=
0.0630
x2_index=
65
1
x(x2_index)
ans=1.2500
%page20,ex5
z=magic(10)
z=
929918156774515840
9880714167355576441
4818820225456637047
8587192136062697128
869325296168755234
17247683904249263365
2358289914830323966
7961395972931384572
10129496783537444653
111810077843643502759
sum(z)
ans=
505505505505505505505505505505sum(diag(z))
ans=
505
z(:
2)/sqrt(3)
ans=
57.1577
46.1880
46.7654
50.2295
53.6936
13.8564
2.8868
3.4641
6.9282
10.3923
z(8,:
)=z(8,:
)+z(3,:
)
z=
929918156774515840
9880714167355576441
4818820225456637047
8587192136062697128
869325296168755234
17247683904249263365
2358289914830323966
2
83871011151198387101115119
10129496783537444653
111810077843643502759
3
%page40ex1
先在编辑器窗口写下列m函数,保存为eg2_1.mfunction[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)
xbar=
72.4000
s=12.1124
%page40ex2
s=log
(1);n=0;
whiles=100
n=n+1;
s=s+log(1+n);
end
m=n计算结果m=37
%page40ex3
clear;
f
(1)=1;f
(2)=1;k=2;x=0;
e=1e-8;a=(1+sqrt(5))/2;
whileabs(x-a)e
k=k+1;f(k)=f(k-1)+f(k-2);x=f(k)/f(k-1);end
a,x,k
计算至k=21可满足精度
%page40ex4
clear;tic;s=0;
fori=1:
1000000
s=s+sqrt(3)/2^i;
end
s,toc
tic;s=0;i=1;
whilei=1000000
s=s+sqrt(3)/2^i;i=i+1;
4
end
s,toc
tic;s=0;
i=1:
1000000;
s=sqrt(3)*sum(1./2.^i);s,toc
%page40ex5
t=0:
24;
c=[15141414141516182022232528...313231292725242220181716];plot(t,c)
%page40ex6
%
(1)
x=-2:
0.1:
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:
0.1:
3;y=x;
[x,y]=meshgrid(x,y);
z=x.^2+y.^2;
surf(x,y,z)
%(4)
x=-3:
0.1:
3;y=-3:
0.1:
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:
0.01:
2*pi;
x=sin(t);y=cos(t);z=cos(2*t);
plot3(x,y,z)
%(6)
theta=linspace(0,2*pi,50);fai=linspace(0,pi/2,20);
[theta,fai]=meshgrid(theta,fai);
x=2*sin(fai).*cos(theta);
5
【篇二:
matlab数学实验答案】
>(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,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=0.5;n=12;
t=log(r)/n/log(1+0.01*p)
t=
11.5813
%page20,ex4
x=-2:
0.05:
2;f=x.^4-2.^x;
[fmin,min_index]=min(f)
fmin=
-1.3907%最小值
min_index=
54%最小值点编址
x(min_index)
ans=
0.6500%最小值点
[f1,x1_index]=min(abs(f))%求近似根--绝对值最小的点
f1=
0.0328
x1_index=
24
x(x1_index)
ans=
-0.8500
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=
0.0630
x2_index=
65但
x(x2_index)
ans=
1.2500
%page20,ex5
z=magic(10)
z=
929918156774515840
9880714167355576441
4818820225456637047
8587192136062697128
869325296168755234
17247683904249263365
2358289914830323966
7961395972931384572
10129496783537444653
111810077843643502759
sum(z)
ans=
505505505505505505505505505505sum(diag(z))
ans=
505
z(:
2)/sqrt(3)
ans=
57.1577
46.1880
46.7654
50.2295
53.6936
13.8564
2.8868
3.4641
6.9282
10.3923
z(8,:
)=z(8,:
)+z(3,:
)
z=
929918156774515840
9880714167355576441
4818820225456637047
8587192136062697128
869325296168755234
17247683904249263365
2358289914830323966
83871011151198387101115119
10129496783537444653
111810077843643502759
%page40ex1
先在编辑器窗口写下列m函数,保存为eg2_1.mfunction[xbar,s]=ex2_1(x)
n=length(x);
xbar=sum(x)/n;
;
例如
x=[81706551766690876177];
[xbar,s]=ex2_1(x)
xbar=
72.4000
s=
12.1124
%page40ex2
s=log
(1);n=0;
whiles=100
n=n+1;
s=s+log(1+n);
end
m=n
计算结果m=37
%page40ex3
clear;
f
(1)=1;f
(2)=1;k=2;x=0;
e=1e-8;a=(1+sqrt(5))/2;
whileabs(x-a)e
k=k+1;f(k)=f(k-1)+f(k-2);x=f(k)/f(k-1);end
a,x,k
计算至k=21可满足精度
%page40ex4
clear;tic;s=0;
fori=1:
1000000
s=s+sqrt(3)/2^i;
end
s,toc
tic;s=0;i=1;
whilei=1000000
s=s+sqrt(3)/2^i;i=i+1;
end
s,toc
tic;s=0;
i=1:
1000000;
s=sqrt(3)*sum(1./2.^i);
s,toc
%page40ex5
t=0:
24;
c=[15141414141516182022232528...313231292725242220181716];plot(t,c)
%page40ex6
%
(1)
x=-2:
0.1:
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:
0.1:
3;y=x;
[x,y]=meshgrid(x,y);
z=x.^2+y.^2;
surf(x,y,z)
%(4)
x=-3:
0.1:
3;y=-3:
0.1:
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:
0.01:
2*pi;
x=sin(t);y=cos(t);z=cos(2*t);
plot3(x,y,z)
%(6)
theta=linspace(0,2*pi,50);fai=linspace(0,pi/2,20);
[theta,fai]=meshgrid(theta,fai);
x=2*sin(fai).*cos(theta);
【篇三:
matlab数学实验报告】
与光照——
浅析matlab中花瓶图片的做法
matlab程序设计教程期中考试作业
班级:
数学系11级a班
姓名:
王佳荣
姓名:
20111611104
数学实验报告
实验序号:
日期:
2014年05月05日Whenyouareoldandgreyandfullofsleep,
Andnoddingbythefire,takedownthisbook,
Andslowlyread,anddreamofthesoftlook
Youreyeshadonce,andoftheirshadowsdeep;
Howmanylovedyourmomentsofgladgrace,
Andlovedyourbeautywithlovefalseortrue,
Butonemanlovedthepilgrimsoulinyou,
Andlovedthesorrowsofyourchangingface;
Andbendingdownbesidetheglowingbars,
Murmur,alittlesadly,howlovefled
Andpaceduponthemountainsoverhead
Andhidhisfaceamidacrowdofstars.
Thefurthestdistanceintheworld
Isnotbetweenlifeanddeath
ButwhenIstandinfrontofyou
Yetyoudon'tknowthat
Iloveyou.
Thefurthestdistanceintheworld
IsnotwhenIstandinfrontofyou
Yetyoucan'tseemylove
Butwhenundoubtedlyknowingthelovefromboth
Yetcannotbetogether.
Thefurthestdistanceintheworld
Isnotbeingapartwhilebeinginlove
ButwhenIplainlycannotresisttheyearning
Yetpretendingyouhaveneverbeeninmyheart.
Thefurthestdistanceintheworld
Isnotstrugglingagainstthetides
Butusingone'sindifferentheart
Todiganuncrossableriver
Fortheonewholovesyou.