Calculating the Magnitude of U + V + W

[mattyk]

Homework Statement

U(1, -1, 2)
V(0, 3, -1)
W(-1, -1 1)
Calculate ||(U + V + W)

Homework Equations

is it as simple as U + V + W then finding out the magnitude of that point.

The Attempt at a Solution

[/B]
For example (U + V) + W
then the magnitude of that point?

 

[mattyk]

As far as I can work out it is right but it just seems too simple.

 

[Mark44]

Homework Statement

U(1, -1, 2)
V(0, 3, -1)
W(-1, -1 1)
Calculate ||(U + V + W)

I think you want |U + V + W|

Homework Equations

is it as simple as U + V + W then finding out the magnitude of that point.

These are apparently vectors, not points. And yes, just add the three vectors and then find the magnitude.

For a vector V = <a, b, c>, |V| = $\sqrt{a^2 + b^2 + c^2}$.

The Attempt at a Solution

[/B]
For example (U + V) + W
then the magnitude of that point?