Question

Given vectors u = 7->i + 3->j and ->v = -4->i + 3->j, find 5->u - 4->v in terms of unit vectors ->i and ->j. (-> is the vector sign)

Answer 1

To make it clear
\[\vec u =(7\vec i+3\vec j)\\\vec v=(-4\vec i+3\vec j)\]
find \(5\vec u-4\vec v\) in terms of unit vectors \(\vec i~~~and~~\vec j\)

Answer 2

yep!

Answer 3

find 5u
find 4v
take 5u -4v