代码搜索：协方差矩阵
找到约 10,000 项符合「协方差矩阵」的源代码
代码结果 10,000
www.eeworm.com/read/480412/6663530
m nakagamirnd_gamma.m
function na=nakagamirnd_gamma(m1,N1,N2)
%这个函数用gamma分布的方法产生服从Nakagami_m的【N1,N2】维随机矩阵
%-----------------------------2005.5.30 ----------------------------------
% Shuai lujun,Information Engineering
www.eeworm.com/read/480529/6665678
txt 06-31.txt
例6-31 矩阵的指数和对数运算。
解：在命令窗口中输入如下命令，并按Enter键确认。
>> X=rand(5)
X =
0.7382 0.4103 0.0099 0.2722 0.9318
0.1763 0.8936 0.1389 0.1988 0.4660
0.4057 0.0579 0.202
www.eeworm.com/read/480529/6665710
txt 06-42.txt
例6- 42 求矩阵的Chollesky分解。
解：在命令窗口中输入如下命令，并按Enter键确认。
>> A=[4 -1 -1;-1 4.25 2.75;1 2.75 3.5]
A =
4.0000 -1.0000 -1.0000
-1.0000 4.2500 2.7500
1.0000 2.7500 3.5000
>> R=
www.eeworm.com/read/480529/6665737
txt 06-49.txt
例6- 49 使用reshape函数进行矩阵结构的改变。
>> A=[1:16]
A =
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
>> reshape(A,4,4)
ans =
1 5 9 13
2 6
www.eeworm.com/read/480149/6677813
m sumarize8_7_2.m
syms t s %定义基本符号变量
syms a b positive %对常数进行“限定性”设置
Mt = [dirac(t-a),heaviside(t-b);exp(-a*t)*sin(b*t),t^2*cos(3*t)]; %定义输入矩阵
MS = laplace(Mt,
www.eeworm.com/read/480149/6677913
m sumarize8_7_2.m
syms t s %定义基本符号变量
syms a b positive %对常数进行“限定性”设置
Mt = [dirac(t-a),heaviside(t-b);exp(-a*t)*sin(b*t),t^2*cos(3*t)]; %定义输入矩阵
MS = laplace(Mt,
www.eeworm.com/read/478650/6712654
m exe0810.m
%Exe0810
a=input('请输入3*3的矩阵：');
fid=fopen('Exe0809.mat','w+');
fwrite(fid,a);
fseek(fid,-3,0);
b=fread(fid,1)
fseek(fid,-3,0);
c=fread(fid,1)
fclose(fid);
www.eeworm.com/read/263879/11338106
m inv.m
%求逆矩阵
%用法 B=inv(A) 其中A为数值或符号方阵,B返回A的逆
%例如
% inv([1 2;3 4]) %数值
% syms a b c d;inv([[a,b;c,d]) %符号
%
%INV Matrix inverse.
% INV(X) is the inverse of the square
www.eeworm.com/read/263879/11338227
m rand.m
%R=rand(m,n) 生成(0,1)上均匀分布的m行n列随机矩阵
%RAND Uniformly distributed random numbers.
% RAND(N) is an N-by-N matrix with random entries, chosen from
% a uniform distribution on the interval (0.0,1.0
www.eeworm.com/read/409142/11345070
m sumarize8_7_2.m
syms t s %定义基本符号变量
syms a b positive %对常数进行“限定性”设置
Mt = [dirac(t-a),heaviside(t-b);exp(-a*t)*sin(b*t),t^2*cos(3*t)]; %定义输入矩阵
MS = laplace(Mt,