Results 1 to 3 of 3

Math Help - Integral Word Problem

  1. #1
    Junior Member
    Joined
    Jan 2009
    Posts
    45

    Integral Word Problem

    Hey

    I'm stuck on this word problem

    Marginal revenue in thousands of dollars is: R'(x) = -0.6x + 7
    where x is the number of units sold, in hundreds. Find the revenue if 350 units are sold, assume R(0) = 0

    Okay so I did the anti derivative of the equation
    with C equalling 0
    (-0.6x^2)/2 + 7x/1 = Y

    then substituted 350 into the equation

    My answer was -34300, my text says the answer is 20825

    Where have I gone wrong?????????

    thanks in advance.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Like a stone-audioslave ADARSH's Avatar
    Joined
    Aug 2008
    From
    India
    Posts
    726
    Thanks
    2
    Quote Originally Posted by Mudd_101 View Post
    Hey

    I'm stuck on this word problem

    Marginal revenue in thousands of dollars is: R'(x) = -0.6x + 7
    where x is the number of units sold, in hundreds. Find the revenue if 350 units are sold, assume R(0) = 0

    Okay so I did the anti derivative of the equation
    with C equalling 0
    (-0.6x^2)/2 + 7x/1 = Y

    then substituted 350 into the equation

    My answer was -34300, my text says the answer is 20825

    Where have I gone wrong?????????

    thanks in advance.
    Substitute 3.5 (as this needs to be in 100 s
    The value of Y will come out in 1000s So multiply the answer you get with 1000
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Jan 2009
    Posts
    45
    thanks
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Integral word problem
    Posted in the Calculus Forum
    Replies: 5
    Last Post: February 21st 2010, 06:52 AM
  2. Integral Word Problem
    Posted in the Calculus Forum
    Replies: 1
    Last Post: November 25th 2009, 01:56 AM
  3. Integral Word Problem
    Posted in the Calculus Forum
    Replies: 2
    Last Post: May 31st 2009, 03:00 PM
  4. integral word problem
    Posted in the Calculus Forum
    Replies: 3
    Last Post: February 13th 2009, 06:07 PM
  5. integral word problem
    Posted in the Calculus Forum
    Replies: 4
    Last Post: December 18th 2006, 03:43 PM

Search Tags


/mathhelpforum @mathhelpforum