# Inverse function of f^-1

1. Dec 9, 2008

### fazal

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

2. Dec 10, 2008

### gabbagabbahey

Re: funC

Does this help?

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.

3. Dec 10, 2008

### fazal

Re: funC

iam sorry new to the forum.....

4. Dec 10, 2008

### fazal

Re: funC

is the answer for part b) -9.656<=x<=4.159 ??

5. Dec 10, 2008

### gabbagabbahey

Re: funC

Looks good to me