"A matrix 'B' of 5x5 whose elements are all 5"

My current 'correct' solution to this problem is:

B = [5,5,5,5,5;5,5,5,5,5;5,5,5,5,5;5,5,5,5,5;5,5,5,5,5;]

But this seems a little long and silly. Is there an identity matrix like "M = ones[2,3]" that works for this application?

[Walter Roberson]

https://www.mathworks.com/matlabcentral/answers/87577-how-do-i-create-a-10-10-matrix-containing-numbers-from-1-to-100#comment_2335570 I gave 5 answers

Answer 1

[John D'Errico]

Can you create a matrix of the desired size that is all ones? (Clearly yes, since you know how to use the ones function.) Could you then multiply all elements of that matrix by the number 5? (I hope so.)

As an alternative, could you use the repmat function? (Of course.)

Answer 2

[Torsten]

B = 5*ones(5)

B = 5×5

5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5