Results 1 to 5 of 5

Math Help - parametric equations

  1. #1
    Junior Member
    Joined
    Jul 2007
    Posts
    69
    Awards
    1

    parametric equations

    Find d^2y/dx^2 if x=t-t^2 and y=t-t^3.


    The answer is 2-6t+6t^2/ (1-2t)^3.

    My question is- Why is the denominator raised to the third power?

    Any help would be greatly appreciated.

    Tom Ohnemus
    Follow Math Help Forum on Facebook and Google+

  2. #2
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by kid funky fried View Post
    Find d^2y/dx^2 if x=t-t^2 and y=t-t^3.


    The answer is 2-6t+6t^2/ (1-2t)^3.

    My question is- Why is the denominator raised to the third power?

    Any help would be greatly appreciated.

    Tom Ohnemus
    does this help?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Jul 2007
    Posts
    69
    Awards
    1
    Quote Originally Posted by Jhevon View Post
    does this help?
    ok,
    i worked through the example. i will now try to apply it to the problem i posted.


    Got it! Thx so much. I guess i should review the quotient rule.
    Last edited by kid funky fried; February 6th 2008 at 06:23 PM.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by kid funky fried View Post
    ok,
    i worked through the example. i will now try to apply it to the problem i posted.
    ok. let us know how it goes
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Junior Member
    Joined
    Jul 2007
    Posts
    69
    Awards
    1

    Thx

    I appreciate your help.
    I have enrolled at il state for the summer and i really need to brush up on cal I,II,III before I start classes. I have not done much in 12 years so have a lot to review.
    Thx again.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. parametric equations, equations of plane
    Posted in the Calculus Forum
    Replies: 1
    Last Post: September 10th 2009, 03:58 AM
  2. Parametric equations to rectangular equations.
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: April 5th 2009, 11:39 PM
  3. Parametric equations
    Posted in the Calculus Forum
    Replies: 1
    Last Post: March 15th 2009, 03:18 PM
  4. Replies: 3
    Last Post: December 2nd 2008, 11:54 AM
  5. Replies: 1
    Last Post: September 1st 2007, 07:35 AM

Search Tags


/mathhelpforum @mathhelpforum