Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

mathcalculus Group Title

help! Given determine the points where (a) the curve intercepts the axis; (b) the tangent line to the curve is horizontal.

  • 11 months ago
  • 11 months ago

  • This Question is Closed
  1. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    • 11 months ago
  2. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i believe that the 2nd answer is (5,25) right? @dlxhazedxlb @hihihii

    • 11 months ago
  3. hihihii Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yup! 2nd answer is (5,25) good job!

    • 11 months ago
  4. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    how about the first?

    • 11 months ago
  5. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    im not sure how to do this one

    • 11 months ago
  6. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @hihihii

    • 11 months ago
  7. hihihii Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    in order to find where the curve intersects the x-axis, you have to set the original function equal to 0. -1x^2+ 10x= 0

    • 11 months ago
  8. hihihii Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    x^2-10x=0 x(x-10)=0 x=0, x=10 to find the points, plug 0 and 10 back into the original equation

    • 11 months ago
  9. hihihii Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    0+0=0 (0,0) -1(10)^2-10(10)=0 (10,0) both the y values are 0 because that's where it crosses the x-axis

    • 11 months ago
  10. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @hihihii i see where you got x=0 but how'd you get -10?

    • 11 months ago
  11. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i got -x+10

    • 11 months ago
  12. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    and also which is the correct answer to A?

    • 11 months ago
  13. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    (0,0) or (10,0)? which one do i pick?

    • 11 months ago
  14. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @hihihii

    • 11 months ago
  15. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    x^2-10x=0 ??

    • 11 months ago
  16. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    hello hello hello

    • 11 months ago
  17. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @satellite73 @SithsAndGiggles would anyone kindly like to help?

    • 11 months ago
  18. SithsAndGiggles Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    \[f(x)=-x^2+10x\] Finding where the curve intercepts the x-axis is the same as solving for the roots of the equation: \[-x^2+10x=0\] The tangent line to the curve is horizontal when the slope of the tangent line is 0. Hence solve for x in \(f'(x)=0\): \[f'(x)=-2x+10=0\]

    • 11 months ago
    • Attachments:

See more questions >>>

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.