Results 1 to 2 of 2
Like Tree1Thanks
  • 1 Post By Plato

Math Help - finding of points in(geometric applications)

  1. #1
    Member
    Joined
    Jun 2010
    From
    Zewail University - Cairo - Egypt
    Posts
    136

    finding of points in(geometric applications)

    find points laying on the circle x^2 +y^2 -4x -2y =0 at which the tangents to the circle have slope = 0.5

    i get the answer :
    points are : (3,-1) (3,3) (1,3) (1,-1)

    i have a guide answer (3,-1) (1,3) only .... Is this a mistake in the guide answer ???
    Thanks in advance
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,605
    Thanks
    1573
    Awards
    1

    Re: finding of points in(geometric applications)

    Quote Originally Posted by mido22 View Post
    find points laying on the circle x^2 +y^2 -4x -2y =0 at which the tangents to the circle have slope = 0.5
    i get the answer :
    points are : (3,-1) (3,3) (1,3) (1,-1)

    i have a guide answer (3,-1) (1,3) only .... Is this a mistake in the guide answer ???

    You need to see the slope at (3,3) is -\frac{1}{2} not \frac{1}{2}.
    Thanks from mido22
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 16
    Last Post: June 10th 2011, 06:49 AM
  2. Replies: 1
    Last Post: December 13th 2010, 03:09 AM
  3. Geometric Applications of Definite Integrals.
    Posted in the Calculus Forum
    Replies: 6
    Last Post: December 10th 2010, 12:35 PM
  4. Applications of geometric series
    Posted in the Algebra Forum
    Replies: 3
    Last Post: October 12th 2010, 09:03 AM
  5. Applications of infinite geometric series
    Posted in the Calculus Forum
    Replies: 1
    Last Post: June 3rd 2008, 02:04 AM

Search Tags


/mathhelpforum @mathhelpforum