Results 1 to 6 of 6

Math Help - classification of quadrics

  1. #1
    Newbie
    Joined
    Apr 2008
    Posts
    24

    classification of quadrics

    Hi,

    Can someone help me on a website for the classification of quadrics(ellipsoids

    parabolois,............)starting from the general second order equation.

    Thanks.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Banned
    Joined
    Nov 2007
    Posts
    54

    Do you mean quadratics?

    Do you mean help you find a website?

    If that is it, just search for "quadratics."

    What do you mean by "classifying"?

    Any book explaining basic analytic geometry will tell you enough.

    Look for "completing the square" if you want more.

    Look for "polynomials of degree two" or "second degree polynomials" for more.


    Bye.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor Reckoner's Avatar
    Joined
    May 2008
    From
    Baltimore, MD (USA)
    Posts
    1,024
    Thanks
    75
    Awards
    1

    Smile

    Quote Originally Posted by Gilbert View Post
    Hi,

    Can someone help me on a website for the classification of quadrics(ellipsoids

    parabolois,............)starting from the general second order equation.

    Thanks.
    Hi, Gilbert. The Wikipedia article on quadrics and MathWorld's Quadratic Surfaces article has a list of the different types of quadric surfaces, and a simple Google search for "Quadrics" will turn up more.

    For classification, you may need to perform a rotation of axes to eliminate the xy,\;xz,\;\text{or}\;yz terms in its equation. Once in a normalized form, classification should be straightforward.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Banned
    Joined
    Nov 2007
    Posts
    54

    quadratic surfaces

    Thanks.

    That's beyond my experience although I have seen it, I have never to date had access to Mathematica or similar software nor the funds to purchase it.

    A former calculus teacher once told me that he wanted to teach a class in Mathematica, stating, "You'll never get anywhere in mathematics without a computer." I am not so sure of what he meant by that, but I don't know if I will ever have enough discretionary cash to purchase this kind of software.

    Quadratic Surface -- from Wolfram MathWorld

    I wonder if a student edition of Mathematica is available and affordable.

    It would be useful for help my daughter with math education.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Super Member
    earboth's Avatar
    Joined
    Jan 2006
    From
    Germany
    Posts
    5,830
    Thanks
    123
    Quote Originally Posted by Bradley View Post
    ... I am not so sure of what he meant by that, but I don't know if I will ever have enough discretionary cash to purchase this kind of software.
    ...

    It would be useful for help my daughter with math education.
    You'll find here a mathematical toolbox (including 3-D-graphs of functions and relations):

    EuMathT - Euler Math Toolbox

    I don't use this program so I can't help you very much how it is used etc. But if I remember correctly CaptainBlack is somehow involved in this project.

    Give it a try.


    Edit: To complete your collection of useful math programs:

    Graph

    That's the software used at this forum to draw graphs of functions

    GeoGebra

    This program is quite useful if you want to do some geometric constructions.

    Certainely it isn't necessary to point out, that all computer programs are tools and you must know the math before you can use such a program appropriately.
    Last edited by earboth; May 22nd 2008 at 02:51 AM.
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Newbie
    Joined
    Apr 2008
    Posts
    24

    classification of quadrics and plotting

    Hi,

    Bradley and reckoner

    Another usefull plot programme is "" WINPLOT"" you can plot 2-dim and 3-dim

    mathematical expressions.You can plot in three different coordinate

    systems.(cartesion,cylindrical and spherical.)

    Is is free to download.In google you search for "WINPLOT" and that's all.

    Easy to use.

    Bye..........
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. markov process and classification of states
    Posted in the Advanced Statistics Forum
    Replies: 0
    Last Post: April 18th 2011, 07:56 PM
  2. Classification of time series easily
    Posted in the Math Software Forum
    Replies: 0
    Last Post: March 2nd 2011, 01:07 PM
  3. Theorem 9.7 Classification of Groups or order p^(2)
    Posted in the Advanced Algebra Forum
    Replies: 6
    Last Post: January 20th 2011, 07:37 PM
  4. DE Classification
    Posted in the Differential Equations Forum
    Replies: 1
    Last Post: April 10th 2010, 05:11 PM
  5. Classification
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: April 2nd 2009, 08:28 PM

Search Tags


/mathhelpforum @mathhelpforum