How to modify one line of a matrix and get the entire matrix for result within the modification?

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Gpilz
Gpilz 2021-6-30
评论： Gpilz 2021-6-30
Hi,
For example I have : x = [ 1 2 3; 4 5 6]
If I want to have 1 2 3 multiplies by -1, how can I do? I want to get [-1 -2 -3; 4 5 6] for answer.
Because right now I am only able to do x(1, :)*-1 which gives me [-1 -2 -3]
Thanks!

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采纳的回答

Jonas
Jonas 2021-6-30
just assign the values like that:
x=[1 2 3; 4 5 6];
x(1,:)=-x(1,:)

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