matrix multiple line should be the same

hello i want to write a matrix in which the first two rows are equal and the third and fourth are also equal. so this is how it should look:

x = 1 2 3 4 5
    1 2 3 4 5
    6 7 8 9 10
    6 7 8 9 10

[TheDice]

or even better:

1 1 6 6
2 2 7 7
3 3 8 8
4 4 9 9
5 5 10 10

Answer 1

[DGM]

x = [1 2 3 4 5;
    6 7 8 9 10]

% replicate elements in 2x1 blocks
xx = repelem(x,2,1)

gives

xx =
     1     2     3     4     5
     1     2     3     4     5
     6     7     8     9    10
     6     7     8     9    10

for replicating columns, just use

% replicate elements in 1x2 blocks
xx = repelem(x,1,2)