Results 1 to 4 of 4

Math Help - derivative

  1. #1
    Member
    Joined
    Jan 2011
    Posts
    110

    derivative

    I am not sure how to do the follow.

    \frac{dy}{dx } (\frac{5\pi }{6 } )

    Can anyone help?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Forum Admin topsquark's Avatar
    Joined
    Jan 2006
    From
    Wellsville, NY
    Posts
    9,842
    Thanks
    320
    Awards
    1
    Quote Originally Posted by Arron View Post
    I am not sure how to do the follow.

    \frac{dy}{dx } (\frac{5\pi }{6 } )

    Can anyone help?
    Do what with it? You have a typo somewhere.

    -Dan
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member
    Joined
    Jan 2011
    Posts
    110
    Basically i am trying to find the gradient of the tangent to an ellipse at the point

    with parameter t is \frac{-cos t}{\sqrt{3}sin t  } ,

    t = \frac{5\pi }{6 }

    Can anyone help?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Behold, the power of SARDINES!
    TheEmptySet's Avatar
    Joined
    Feb 2008
    From
    Yuma, AZ, USA
    Posts
    3,764
    Thanks
    78
    Quote Originally Posted by Arron View Post
    Basically i am trying to find the gradient of the tangent to an ellipse at the point

    with parameter t is \frac{-cos t}{\sqrt{3}sin t  } ,

    t = \frac{5\pi }{6 }

    Can anyone help?
    The way that you have stated the question is still unclear. I am assuming you mean

    x=\sqrt{3}\sin(t) \quad y=-\cos(t)

    If this is the cases then

    \frac{dy}{dx}=\frac{\frac{dy}{dt}}{\frac{dx}{dt}}=  \frac{\sin(t)}{\sqrt{3}\cos(t)}=\frac{\tan(t)}{\sq  rt{3}}

    Now just evaluate at the given value of t.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. contuous weak derivative $\Rightarrow$ classic derivative ?
    Posted in the Differential Geometry Forum
    Replies: 2
    Last Post: April 22nd 2011, 02:37 AM
  2. Replies: 0
    Last Post: January 24th 2011, 11:40 AM
  3. Replies: 2
    Last Post: November 6th 2009, 02:51 PM
  4. Replies: 1
    Last Post: January 7th 2009, 01:59 PM
  5. Fréchet derivative and Gâteaux derivative
    Posted in the Calculus Forum
    Replies: 2
    Last Post: March 23rd 2008, 04:40 PM

Search Tags


/mathhelpforum @mathhelpforum