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Inverse function of f^-1

  1. Dec 9, 2008 #1
    1. The problem statement, all variables and given/known data

    a)The function f is defined by y=f(x) = 3ln 4x 0.01<=x<=1
    solve for x in terms of y and hence find the formula for the inverse function of f^-1

    b)Write the domain of f^-1

    plse help check my answers below...


    2. Relevant equations
    as above


    3. The attempt at a solution

    solve for x in terms of y
    My Ans :x= 1/4*e^(y/3)
    and hence find the formula for the inverse function of f^-1
    my answer is: f^-1(x)=1/4e^(x/3)

    answer to b) plse assist
     
  2. jcsd
  3. Dec 10, 2008 #2

    gabbagabbahey

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    Re: funC

    Does this help?:wink:

    P.S. Please don't post double threads. Someone was already helping you with this problem in the other thread. If you didn't understand their attempt at helping you, you should have just said so instead of posting the same question in anew thread.
     
  4. Dec 10, 2008 #3
    Re: funC

    iam sorry new to the forum.....
     
  5. Dec 10, 2008 #4
    Re: funC

    is the answer for part b) -9.656<=x<=4.159 ??
     
  6. Dec 10, 2008 #5

    gabbagabbahey

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    Re: funC

    Looks good to me :smile:
     
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