What are the components of u-w?

[catcat6088]

Let u=[1 2 3]T , v=[2 -3 1]T , and w=[3 2 -1]T. Find the components of
a) u-w
b) 7v+3
c) -w+v
d) 3(u-7v)
e) -3v-8w
f) 2v-(u+w)

 

[mfb]

Do you know how vectors are added?
If no, look in the script or a book.
If yes, where do you get problems?

 

[catcat6088]

can you give me the answer of part a? Because I forget how to do it