SOLUTION: <p>Do the indicated calculation for the vectors <strong>u</strong> = &#10216;7, -3&#10217; and <strong>v</strong> = &#10216;-3, 8&#10217;.</p> <p>|4<strong>u</strong>| - |<strong>

Algebra ->  Trigonometry-basics -> SOLUTION: <p>Do the indicated calculation for the vectors <strong>u</strong> = &#10216;7, -3&#10217; and <strong>v</strong> = &#10216;-3, 8&#10217;.</p> <p>|4<strong>u</strong>| - |<strong>      Log On


   

Question 1102731:

Do the indicated calculation for the vectors u = ⟨7, -3⟩ and v = ⟨-3, 8⟩.


|4u| - |v| = ___


Thank you friends.
Found 2 solutions by Fombitz, Alan3354:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
abs%284u%29=4%2Aabs%28u%29=4%2Asqrt%287%5E2%2B%28-3%29%5E2%29=4%2Asqrt%2849%2B9%29
abs%28v%29=sqrt%28-3%5E2%2B8%5E2%29=sqrt%289%2B64%29
So,
abs%284u%29-abs%28v%29=4%2Asqrt%2849%2B9%29-sqrt%289%2B64%29
Work that out for your answer.

Answer by Alan3354(69443) About Me  (Show Source):