ACTIVITY 1.4
ASOCIATIVITY OF THE ADDITION

If we want to add three vectors,andwe have two possibilities:

1) addand, and addto this result. This operation is indicated by (+) +.

2) addwith the result of addingand. This operation is indicated by+ (+).

The figure on the right shows that the result is the same in both cases

(+) + =+ (+)

This is the associative property of the vector addition. Then we can write++ instead of  (+)+ or + (+).

INTERACTIVE ACTIVITY

This construction states that the vectors
(+) + and + (+) always coincide.

You can move the green points and with them, the vectors,and to convince you.

You move them in a lot of forms and observe that always it happens

(+) + =+ (+)

SOLUTION