Question

How wld I solve this or it doesnt matter?
||u||^2

Answer 1

like shld i first find the magnitude of one and then square it?

Answer 2

sorry its worded funny but i cant think of any other way

Answer 3

\[u=(a,b,c)\]\[||u||=\sqrt{a^2+b^2+c^2}\]so\[||u||^2=a^2+b^2+c^2\]so it's actually a little less work than finding the magnitude usually

Answer 4

kk i see thanks