Convert the following matrix: [000000100100010010110110] to the following: [000001100101010011110111]

tuzkutimonq4

tuzkutimonq4

Answered question

2022-09-11

Convert the following matrix:
[ 0 0 1 1 0 0 1 1 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 ]
To the following:
[ 0 0 1 1 0 0 1 1 0 0 0 0 1 1 1 1 0 1 0 1 0 1 0 1 ]

Answer & Explanation

Kendall Ponce

Kendall Ponce

Beginner2022-09-12Added 18 answers

In the following, denote the column i of matrix M as M i . I don't think this is standard notation, but it will make things simpler for this answer.
So, another way to think of A X is by the equation ( A X ) i = A X i , which basically says that column 𝑖 of A X is a linear combination of the columns of A, where the coefficients are determined by what column 𝑖 of X is. Now, this means that each column of A X is a linear combination of the columns of A, so each column of A X needs to be in the column space of A.
However, if we look at B, we can clearly see the second column, ( 0 , 0 , 1 ) t , has a non-zero third coordinate, while in A, all of the columns has a zero third coordinate. Therefore, ( 0 , 0 , 1 ) t is not in the column space of 𝐴, so there's no way ( 0 , 0 , 1 ) t could be a column of A X. Therefore, A X B for any X.
In short, there is no way to solve the equation A X = B.

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