basic question about matrices

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Sanket Dahat 2019-11-25

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/493075-basic-question-about-matrices

评论： Sanket Dahat 2019-11-25

采纳的回答： Philippe Lebel

Given a Matrix A,

Create a row vector of 1's that has same number of elements as A has rows.
Create a column vector of 1's that has the same number of elements as A has columns.
Using matrix multiplication, assign the product of the row vector, the matrix A, and the column vector (in this order) to the variable result.

Think about what the result represents...

explain the step of solving

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Answer 1

Philippe Lebel 2019-11-25

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https://ww2.mathworks.cn/matlabcentral/answers/493075-basic-question-about-matrices#answer_403249

编辑：Philippe Lebel 2019-11-25

As i think this is an homework i'd suggest reading:

https://www.mathworks.com/help/matlab/ref/ones.html

https://www.mathworks.com/help/matlab/ref/size.html

and

https://www.mathworks.com/help/matlab/ref/mtimes.html

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Guillaume 2019-11-25

And I'd recommend going through the free matlab onramp course, and reading the getting started tutorial in the doc because, frankly, this is extremely basic homework that anybody who's doing a matlab course should be able to do on their own if they put a modicum of effort.

Sanket Dahat 2019-11-25