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F(x) = 1/(x+1) - 2/9

  1. Jun 14, 2009 #1
    f(x) = 1/(x+1) - 2/9

    just wondering whats f-1 (y) will be

    ill have a go at it now thx
     
    Last edited: Jun 14, 2009
  2. jcsd
  3. Jun 14, 2009 #2

    arildno

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    Re: functions

    Well, what have you tried so far?
     
  4. Jun 14, 2009 #3

    symbolipoint

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    Re: functions

    You have some text-form expression difficulties. You seem to want to find the inverse of
    f(x) = [tex]\frac{1}{x+1}[/tex] - [tex]\frac{2}{9}[/tex]
    In which you may create the transformation using f(x)=y of
    x = [tex]\frac{1}{y+1}[/tex] - [tex]\frac{2}{9}[/tex]

    Solve for y which will really be your inverse of the original function. Watch your algebra steps carefully, and then try checking your result again.

    That looks very bad when I view the forum result; the 'tex' tagged portions look blackened and are not readable or legible. Is this just me here, or does it look that way for everybody?
     
    Last edited: Jun 14, 2009
  5. Jun 14, 2009 #4
    Re: functions

    wow thank you very much i got it now :)
     
    Last edited: Jun 14, 2009
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