Results 1 to 6 of 6

Math Help - one graph, one related rates problem

  1. #1
    Newbie
    Joined
    Dec 2012
    From
    USA
    Posts
    2

    one graph, one related rates problem

    one graph, one related rates problem-mathw.jpg i need solution



    Please start a new problem with a new thread.

    Now, what have you done with these two problems?
    Last edited by skeeter; December 23rd 2012 at 06:21 AM.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Sep 2012
    From
    Australia
    Posts
    3,607
    Thanks
    591

    Re: one graph, one related rates problem

    Hey yns177.

    We'll start with the first one: can you show us an attempt of graphing the function?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Super Member
    Joined
    Jul 2012
    From
    INDIA
    Posts
    822
    Thanks
    209

    Re: one graph, one related rates problem

    one graph, one related rates problem-shadow-rate.png
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Super Member
    Joined
    Mar 2010
    Posts
    905
    Thanks
    204

    Re: one graph, one related rates problem

    The rate of change of the angle, \frac{d\theta}{dt}, needs to be expressed in radians/minute:

    \frac{d\theta}{dt}=\frac{0.27\pi}{180}=0.00471

    So \frac{dx}{dt}=-80\csc^2{\theta}\frac{d\theta}{dt}=-80\left(\frac{100}{80}\right)^2(0.00471)=0.589 feet per minute

    - Hollywood
    Follow Math Help Forum on Facebook and Google+

  5. #5
    MHF Contributor

    Joined
    Apr 2005
    Posts
    14,971
    Thanks
    1121

    Re: one graph, one related rates problem

    Who was it who originally posted the question?
    Follow Math Help Forum on Facebook and Google+

  6. #6
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,621
    Thanks
    426

    Re: one graph, one related rates problem

    Quote Originally Posted by HallsofIvy View Post
    Who was it who originally posted the question?
    The OP, yns177, piggybacked onto another thread. I moved it.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Related Rates Problem
    Posted in the Calculus Forum
    Replies: 2
    Last Post: January 17th 2011, 09:06 PM
  2. Related rates problem
    Posted in the Calculus Forum
    Replies: 1
    Last Post: October 3rd 2009, 02:42 PM
  3. related rates problem
    Posted in the Calculus Forum
    Replies: 2
    Last Post: June 1st 2008, 11:47 AM
  4. Related Rates problem
    Posted in the Advanced Applied Math Forum
    Replies: 0
    Last Post: October 24th 2007, 11:37 PM
  5. [SOLVED] Related Rates Problem
    Posted in the Calculus Forum
    Replies: 1
    Last Post: November 12th 2006, 12:52 PM

Search Tags


/mathhelpforum @mathhelpforum