# Calculus II/Vector Geometry Operation

## Vector Geometry Operations edit

## Addition and Subtraction edit

If and are vectors,

Then the sum

- is also a vector (see Figure 2(a)).

The two vectors can also be subtracted from one another to give another vector

- .

## Multiplication by a scalar edit

Multiplication of a vector by a scalar has the effect of stretching or shrinking the vector (see Figure 2(b)).

You can form a unit vector that is parallel to by dividing by the length of the vector . Thus,