A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

Find an equation of the plane. The plane passes through the points (5, 3, 1) and (5, 1, -5) and is perpendicular to the plane 8x + 9y + 2z = 11.

  • This Question is Closed
  1. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I found the vector of two points, crossed points w/ a,b,c from eq of plane. then I plugged into eq. of plane formula. what did I do wrong?

  2. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Check your answer by taking dot product of two perpendicular vectors.

  3. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I see a mistake in my calculation.

  4. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    What is wrong in my method?

  5. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Show us your method.

  6. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    (5,3,1) (5,1,-5) -> <0,-2,-6> <0,-2,-6>X<8,9,2>=<50,-48,16> <50,-48,16>.<8,9,2> = 0 <50,-48,16>=<25,-24,8> 25(x-5)^2-24(y-3)^2+8(z-1)=0 25x-125-24y-72+8z-8=0 25x-24y+8z=205

  7. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    What does your answer say in book, apparently you are checking it?

  8. myininaya
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    chag (sorry to interrupt) did you ask about the calculus dream problem or was that someone else

  9. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Someone else.

  10. myininaya
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    k thanks

  11. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    There is another method, I don't know if this is valid <a,b,c>dot V=0. it gives you 25x-27y+2z=0

  12. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Not correct

  13. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You asked what is wrong with your method. The mistake is when you did the equation formula you squared x and y; you shouldn't have squared it 25x-24y+8z=? Plug in (5,3,1) and you get 25x-24y+8z=61

  14. 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.