Question

Given u =(√3,-1) and v= (3,-4), what is u. v?
O-4√3-3
O-4√3+3
O 3√3-4
3√3+4

Answer 1

`u=(√(3)~~,~-1)\hspace{5em}v=(3~~,~-4) \\\\\\ u\cdot v\implies (√(3)\cdot 3)~~ + ~~(-1\cdot -4)\implies \stackrel{ \textit{dot product} }{3√(3)+4}`