Results 1 to 2 of 2

Math Help - Simplify (2(384/y)-12) + (2y-8)

  1. #1
    Member
    Joined
    Jan 2009
    From
    Ontario Canada
    Posts
    219

    Simplify (2(384/y)-12) + (2y-8)

    I am working on a question and for the life of me I am not getting this.

    I want to simplify so I can do the first derivative

    Can someone solve this for me. I am having a total blank on this one.


    d = (2(384/y)-12) + (2y-8)

    so I get
    ((768/y)-12) + (2y-8)

    So it's (768-12/ y) + (2y-8) Correct? to clear out the Y I multiply the other side by Y to get 2y^2 -8y????

    Thanks
    Last edited by mr fantastic; March 21st 2011 at 06:23 PM. Reason: Re-titled.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,236
    Thanks
    28
    Quote Originally Posted by bradycat View Post

    I want to simplify so I can do the first derivative

    Can someone solve this for me. I am having a total blank on this one.


    d = (2(384/y)-12) + (2y-8)
    \displaystyle d = \left( 2\left( \frac{384}{y}\right)-12\right)+ \left( 2y-8\right)

    \displaystyle d =  \frac{768}{y}-12+  2y-8

    \displaystyle d =  \frac{768}{y}+  2y-20

    \displaystyle d =  768y^{-1}+  2y-20

    \displaystyle d' = -1\times  768y^{-2}+  2
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. simplify #2
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: September 21st 2009, 02:37 PM
  2. Please simplify
    Posted in the Trigonometry Forum
    Replies: 4
    Last Post: April 27th 2009, 04:32 AM
  3. Can you simplify this further?
    Posted in the Algebra Forum
    Replies: 4
    Last Post: April 23rd 2009, 06:45 AM
  4. Simplify
    Posted in the Algebra Forum
    Replies: 2
    Last Post: April 12th 2009, 05:06 AM

Search Tags


/mathhelpforum @mathhelpforum