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Question
product of nonsingular matrices is singular?
I am generating this 1000x1000 real matrix A that is nonsingular. Linear algebra claims that det(A) = det(A') and that det(AA') ...
nästan 8 år ago | 2 answers | 1
2
answersQuestion
Running time worsening when matrices of size 2^k are involved.
I have experienced a worsening in the performances of a software when data of size 2^k for some k is involved. The problem is ve...
nästan 8 år ago | 0 answers | 0
0
answersQuestion
multiple vectors histogram plotting
I would like to plot a histogram like the one in the picture, the x axis is labeled with different matrix names, and for each th...
ungefär 8 år ago | 1 answer | 0
1
answerQuestion
Scanning strings in a string array
I see that if I declare a string between ' ', I can have access to each single character. For instance: >> x = 'abc'...
ungefär 8 år ago | 2 answers | 0
2
answersQuestion
Fiedler matrix determinant behaviour
With the following command I generate a 1000x1000 Fiedler matrix from the Matlab gallery: A = gallery('fiedler',rand...
mer än 8 år ago | 1 answer | 0
1
answerQuestion
Generate random permutation matrix
I am trying to generate a random square matrix A of dimension n that has one and only one 1 per row and column. My idea is the...
mer än 8 år ago | 2 answers | 0
