Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

hang254

  • one year ago

Let u = <7, -3>, v = <-9, 5>. Find 4u - 3v.

  • This Question is Closed
  1. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ok u=<7,-3> do you know how to find 4u or 4<7,-3>?

  2. hang254
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    no, I'm not very good with this topic at all

  3. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    this is going to blow your mind but this pretty easy to do example: pretend we have u=<1,-2> and we are asked to find 5u 5u=5<1,-2>=<5(1),5(-2)>=<5,-10>

  4. hang254
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    alright

  5. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so can you evaluate 4<7,-3> now?

  6. hang254
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    4u-3v=4<7,-3>, -3<-9,5> = <4(7), 4(-3)> = <28,-12> -3(-9), -3(5) = <27, -15>

  7. hang254
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so it's <55, -27>

  8. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yep that is very good <28,-12>+<27,-15> =<28+27,-12-15> =<55,-27>

  9. hang254
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Thank you!

  10. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    np you did it all

  11. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.