Writing a loop to create a matrix

Question

Kent Doan 2022-5-2

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1709990-writing-a-loop-to-create-a-matrix

编辑： Davide Masiello 2022-5-2

if N==1
    Lambda = A;
elseif N==2
    Lambda = [A A^2]';
elseif N==3
    Lambda = [A A^2 A^3]';
elseif N==4
    Lambda = [A A^2 A^3 A^4]';
elseif N==5
    Lambda = [A A^2 A^3 A^4 A^5]';
end

Given that A is a matrix, how do I create a loop that creates:

Lambda = [A A^2 A^3... A^(N-2) A^(N-1) A^N]';

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Answer 1

Davide Masiello 2022-5-2

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1709990-writing-a-loop-to-create-a-matrix#answer_955610

编辑：Davide Masiello 2022-5-2

在 MATLAB Online 中打开

Example

A = rand(3)
A = 3×3
    0.5684    0.3903    0.6124
    0.2054    0.1345    0.8194
    0.4885    0.8078    0.9672
n = 10;
lambda = [];
for i = 1:n
    lambda = [lambda;A.^i];
end
lambda
lambda = 30×3
    0.5684    0.3903    0.6124
    0.2054    0.1345    0.8194
    0.4885    0.8078    0.9672
    0.3231    0.1523    0.3750
    0.0422    0.0181    0.6714
    0.2386    0.6525    0.9355
    0.1837    0.0594    0.2296
    0.0087    0.0024    0.5502
    0.1166    0.5271    0.9048
    0.1044    0.0232    0.1406