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gives

C =
12345678

Or, we may want to expand A by stacking it on top of B (this is allowed only
if both matrices have the same number of columns). Enter:

D=[A;B]

produces

D =
1234
5678
We illustrate the appending operations for larger matrices: define E as the
(2 ⊗ 3) matrix with one for all its elements, and we desire to append it hori-
zontally to D. This is allowed because both have the same number of rows
(= 2). Enter:

E=ones(2,3)

produces

E =
111
111

Enter:

F=[D E]

produces

F =
1234111
5678111

Or, we may want to stack two matrices in a vertical configuration. This
requires that the two matrices have the same number of columns. Enter:

G=ones(2,4)

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