Help Creating the following matrix

Create a matrix using functions zeros(), ones() and/or eye()

3 0 2 2

0 3 2 2

0 0 3 0

[Adam Danz]

What's your question? Where are you stuck in this task?

To learn about the functions you listed and to see examples, search for them in the documentation.

https://www.mathworks.com/help/matlab/

Answer 1

[John D'Errico]

Very easy, really.

A = zeros(3,4);
A(1,1) = 3*eye;
A(1,3) = 2*ones;
A(1,4) = 2*ones;
A(2,2) = 3*eye;
A(2,3) = 2*ones;
A(2,4) = 2*eye;
A(3,3) = 3*ones;

A =
     3     0     2     2
     0     3     2     2
     0     0     3     0

Oh, darn. This is actually your homework, and I just did it for you. (Did you notice I use eye there sometimes, and ones other times, but for absolutely no good reason for that choice?)

Anyways ... maybe, just maybe, there is a shorter way to solve it.

I got it now! This should work, in only one line:

A = [3 0 2 2;0 3 2 2;0 0 3 0]*ones + zeros;

As you can see, it uses both ones and zeros. I could even have included a use of eye in there too.

A = eye(3)*[3 0 2 2;0 3 2 2;0 0 3 0]*ones + zeros;

[Carlos Martinez]

Thank you so much I was stuck on this for a while