Addition is supported by the plus operator, +, just like for scalars.

Vectors can be added as long as they have the same dimensions.  It is an element by element addition.  The result is a vector.

> x = [1, 2, 3]; y = [4 5 6]

> print(x + y)

[Matrix] (1 x 3)

5        7        9

A scalar can also be added to a vector.  In this case, all elements are added to the vector.

> print(x + 10)

[Matrix] (1 x 3)

11        12        13

For a matrix, the dimensions have to match as well.  It is an element by element addition.  Scalars can be added, too, just like to vectors.

> x = [1, 2, 3;4, 5, 6]; y = [10, 20, 30; 40, 50, 60];

> print(x + y)

[Matrix] (2 x 3)

11        22        33

44        55        66

Addition for vector and matrices of complex data is supported.