malipulating matrices...Cramers Rule help
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i have a matrix A = [1 3 -8;4 -5 19]
and i have b = A(:,3), which gives b = [-8;19]
for cramers rule i now need to replace the 1st column of A with the column matrix b and only give me a 2x2 matrix disregarding the 3rd column, my result needs to be...
A = [-8 3;19 -5] how do i do this???
回答（1 个）
Azzi Abdelmalek
2013-9-24
编辑：Azzi Abdelmalek
2013-9-24
A = [1 3 -8;4 -5 19]
B=fliplr(A(:,2:3))
2 个评论
Nicholas
2013-9-24
Azzi Abdelmalek
2013-9-24
You can just change the order like below
A(:,[3 2]) % b in first column
A(:,[1 3]) % b in second column
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