How to create a 1x2 row vector names AB that stores A as the first entry and B as the scond entry?

A = [1; 2; 3; 4; 5]

B = [1; 2; 3; 4]

How to create a 1x2 row vector names AB that stores A as the first entry and B as the scond entry?

Answer 1

[John D'Errico]

Since this is impossible in the most basic sense, I assume it is not homework.

Simple matrices in MATLAB cannot store a variable number of elements, or a multiple number of elements in each position.

However, it is possible. You just need to learn about the alternaitve type of arrays in MATLAB. In this case, a cell array is perfect.

A = [1; 2; 3; 4; 5];
B = [1; 2; 3; 4];
AB = {A,B}

AB = 1×2 cell array
    {5×1 double}    {4×1 double}

Now you can access either of those vectors simply as

AB{1}

ans = 5×1

1 2 3 4 5

AB{2}

ans = 4×1

1 2 3 4