Question

vector u= (-2,-1,4,5)
vector v= (3,1,-5,7)

evaluate II-II u II v II

Answer 1

what's II-II u II v II ?

Answer 2

norm of, magnitude of I don't even understand what they mean by norm of negative, but the norm of vector u IIuII and the norm of vector v, IIvII

Answer 3

so many vertical bars DX

Answer 4

maybe its the textb i use, but i saw the same when some were showing proof of Cauchy Schwarz inequality. u cn google that