Results 1 to 3 of 3

Math Help - calc question

  1. #1
    Junior Member
    Joined
    Jun 2008
    Posts
    39

    calc question

    point moves along a curve y=2x^2+1 in such a way that the y value is decreasing at the rate of 2 units per sec. at what rate is x changing when x=3/2. I am lost on this b/c i take the 2nd deriv. (4) - am I heading in the right direction?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor Mathstud28's Avatar
    Joined
    Mar 2008
    From
    Pennsylvania
    Posts
    3,641
    Quote Originally Posted by weezie23 View Post
    point moves along a curve y=2x^2+1 in such a way that the y value is decreasing at the rate of 2 units per sec. at what rate is x changing when x=3/2. I am lost on this b/c i take the 2nd deriv. (4) - am I heading in the right direction?
    You are heading in the wrong direction, think about the fact that change in y is representative of dy, and dx of change in x
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Jun 2008
    Posts
    39

    Tangent line problem

    change in y/change in x = F(c+dx) -f(c)/dx=m
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 3
    Last Post: September 21st 2011, 08:21 PM
  2. Calc II question..help please?
    Posted in the Calculus Forum
    Replies: 0
    Last Post: January 28th 2010, 03:27 PM
  3. calc question
    Posted in the Calculus Forum
    Replies: 0
    Last Post: January 19th 2009, 06:29 PM
  4. calc 1 question
    Posted in the Calculus Forum
    Replies: 1
    Last Post: June 9th 2008, 12:28 PM
  5. Calc 1 question
    Posted in the Calculus Forum
    Replies: 4
    Last Post: June 3rd 2008, 03:09 PM

Search Tags


/mathhelpforum @mathhelpforum