Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

roselin

  • 2 years ago

find the slope of the function's graph at the given point, then find and equation for the line tangent to the graph f(x)=x-2x^2 , (1,-1)

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

    start by solving for the slope of the equation

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

    okay

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

    do you know how to do that?

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

    i have to use this formula: y=mx+b?

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

    or y2-y1/ x2-x1?

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

    x= 1?

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

    ok so now use the formula (y-y1)=m(x-x1) where (x1,y1)=(1,-1)

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

    slope=1?

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

    no your slope will be m

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

    yes sorry

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

    using that equation i get y= mx-2

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

    so y=x-2

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

    okay,

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

    now we need to find the inverse of the line

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

    wait are you sure that you wrote the initial equation right because that is a hyperbola

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

    let me check again

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

    ok

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

    it's y= mx-2

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

    for the origional equation f(x)=x-2x^2

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

    yes, its correct

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

    ok well either way now we need to find the equation of a tangent line

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

    how do I that?

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

    1 sec g2g take a quiz b back in 10

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

    okay,np

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

    hmm after thinking about it i think i might have done this wrong

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

    brb

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

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

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.