Results 1 to 3 of 3

Math Help - Calculus 3 - Unit Tangent Vector, Normal, and Curvature

  1. #1
    Member VitaX's Avatar
    Joined
    Feb 2009
    From
    Ohio
    Posts
    185

    Calculus 3 - Unit Tangent Vector, Normal, and Curvature

    I'm in Calculus 3 and were going over unit tangent vectors, normals, and curvature this chapter. I'm in the middle of doing one of those said problems now. I found the unit tangent vector, now I have to find the normal. So I started doing it and (by the way my homework is done all online through a program called MyMathLab) it said "Although my answer is correct, it is not in the correct form". Can someone please help me simplify this thing? Or help me get in the correct form. It really is bothersome.

    Edit: It seems this is the correct answer. Anyone know how to obtain it from my answer which is also correct but not in the right form?

    Attached Thumbnails Attached Thumbnails Calculus 3 - Unit Tangent Vector, Normal, and Curvature-calculus-3-problem.jpg  
    Last edited by VitaX; September 25th 2010 at 05:32 PM.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,623
    Thanks
    428
    \displaystyle \frac{-8t^7}{\sqrt{1+t^{16}}} + \frac{8t^{23}}{\left(1+t^{16}\right)^{\frac{3}{2}}  } =

    \displaystyle \frac{-8t^7(1+t^{16})}{\left(1+t^{16}\right)^{\frac{3}{2}  }} + \frac{8t^{23}}{\left(1+t^{16}\right)^{\frac{3}{2}}  } =

    \displaystyle \frac{-8t^7 - 8t^{23} + 8t^{23}}{\left(1+t^{16}\right)^{\frac{3}{2}}}=

    \displaystyle \frac{-8t^7}{\left(1+t^{16}\right)^{\frac{3}{2}}}
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member VitaX's Avatar
    Joined
    Feb 2009
    From
    Ohio
    Posts
    185
    Ah I see now, I was overthinking simplifying the problem.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 3
    Last Post: November 15th 2011, 05:10 PM
  2. Unit Normal Vector
    Posted in the Calculus Forum
    Replies: 9
    Last Post: June 13th 2011, 06:04 AM
  3. Principal Unit Normal and Curvature
    Posted in the Differential Geometry Forum
    Replies: 1
    Last Post: May 17th 2011, 11:39 AM
  4. Unit tangent, normal, binormal etc.
    Posted in the Calculus Forum
    Replies: 2
    Last Post: December 4th 2009, 04:30 AM
  5. unit tangent and normal vectors
    Posted in the Calculus Forum
    Replies: 3
    Last Post: June 9th 2009, 11:34 AM

Search Tags


/mathhelpforum @mathhelpforum