Results 1 to 3 of 3

Math Help - Finding an instantaneous rate of change

  1. #1
    Senior Member
    Joined
    Nov 2012
    From
    Hawaii
    Posts
    260
    Thanks
    2

    Finding an instantaneous rate of change

    What function do you plug in 1/15??? That's the one that really confuses me... Please help
    Attached Thumbnails Attached Thumbnails Finding an instantaneous rate of change-image.jpg  
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member dokrbb's Avatar
    Joined
    Feb 2013
    From
    ...from out there ;)
    Posts
    229
    Thanks
    20

    Re: Finding an instantaneous rate of change

    Quote Originally Posted by asilvester635 View Post
    What function do you plug in 1/15??? That's the one that really confuses me... Please help
    4(min)/60(min = 1 hour) = 1/15 by simplifying, did you get? it is the time t, say the x_2 point, if you were to put those data on the x-axis, is it clear now?

    dokrbb
    Last edited by dokrbb; April 23rd 2013 at 12:45 PM.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor

    Joined
    Apr 2005
    Posts
    14,973
    Thanks
    1121

    Re: Finding an instantaneous rate of change

    You don't "plug" the time in to any formula. The problem tells you that "s(t)" is the distance the car has gone, from the first police car, in time, t, in hours. You are told that the car passes the second police car in 1/15 of an hour so that s(0)= 0 (0 hours after passing the first car- i.e when he is at the first police car, his distance from that car is 0 miles) and s(1/15)= 5 (1/15 hour after passing the first police car, he is at the second police car so has gone 5 miles).
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Finding the instantaneous rate of change
    Posted in the Pre-Calculus Forum
    Replies: 4
    Last Post: September 27th 2011, 05:17 PM
  2. Instantaneous Rate of Change
    Posted in the Algebra Forum
    Replies: 8
    Last Post: January 14th 2010, 03:29 PM
  3. instantaneous rate of change
    Posted in the Pre-Calculus Forum
    Replies: 3
    Last Post: September 27th 2009, 09:40 AM
  4. Instantaneous Rate of Change
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: May 30th 2009, 12:11 PM
  5. Instantaneous rate of change
    Posted in the Calculus Forum
    Replies: 1
    Last Post: November 25th 2008, 06:44 PM

Search Tags


/mathhelpforum @mathhelpforum