# Math Help - Norms.

1. ## Norms.

let u = [1,2,-1,-2], v=[-2,0,4,3], w=[1,6,1,-3]

calculate:

1. ||u+v||

2. ||u|| + ||v||

2. First add the two vectors and then take the norm.

3. if I add, I get [-1, 2, 3, 1] But how do I take a norm?

4. It depends on which norm you are looking for but I would assume $\sqrt{(-1)^2+2^2+3^3+1^2}=\sqrt{1+4+9+1}=\sqrt{15}$

5. then for the second question, the ans would then be sqrt. 10 + sqrt. 29 right?

6. yup

7. thanks a lot!