Results 1 to 6 of 6

Math Help - Changing an expression?

  1. #1
    Member M670's Avatar
    Joined
    Sep 2012
    From
    Montreal
    Posts
    142

    Changing an expression?

    The expression can be written as , where is a function of . Find .

    This is my question I need to answer, really unsure of the whole thing
    I know I need to make the second formula 2^f(x) reflect the first one just not sure how to proceed?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Prove It's Avatar
    Joined
    Aug 2008
    Posts
    11,315
    Thanks
    1223

    Re: Changing an expression?

    Quote Originally Posted by M670 View Post
    The expression can be written as , where is a function of . Find .

    This is my question I need to answer, really unsure of the whole thing
    I know I need to make the second formula 2^f(x) reflect the first one just not sure how to proceed?
    Hint: \displaystyle \begin{align*} \left(a^n\right)^p = a^{n \cdot p} \end{align*}
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member M670's Avatar
    Joined
    Sep 2012
    From
    Montreal
    Posts
    142

    Re: Changing an expression?

    I am still not getting it....
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Junior Member
    Joined
    Sep 2011
    Posts
    27

    Re: Changing an expression?

    f(x) = (8x)(7x) = 56x^2

    *When you have nested exponents you multiply them.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Member M670's Avatar
    Joined
    Sep 2012
    From
    Montreal
    Posts
    142

    Re: Changing an expression?

    I can't believe it was that simple....
    thank you, this i will for sure remember come exam time
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Junior Member
    Joined
    Sep 2011
    Posts
    27

    Re: Changing an expression?

    Quote Originally Posted by M670 View Post
    I can't believe it was that simple....
    thank you, this i will for sure remember come exam time
    You should review the laws of exponents. It will prove to be extremely helpful for all your math endeavours down the road.

    http://t0.gstatic.com/images?q=tbn:A...WgY4UMPUg_dAHQ
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 5
    Last Post: May 1st 2012, 09:54 AM
  2. Replies: 20
    Last Post: January 15th 2012, 09:30 AM
  3. Replies: 6
    Last Post: October 6th 2011, 01:48 PM
  4. Changing ratios
    Posted in the Algebra Forum
    Replies: 3
    Last Post: December 12th 2010, 09:19 AM
  5. changing expression
    Posted in the Algebra Forum
    Replies: 3
    Last Post: September 26th 2009, 02:02 PM

Search Tags


/mathhelpforum @mathhelpforum