Question

The one to one function f is defined by:
f(x)=x/7x+2
Find the inverse of f. Then, give the domain and range of f^-1 using interval notation.

f^-1(x)=
Domain (f^-1)=
Range (f^-1)=

Answer 1

for finding inverse of a function y=f(x) you need to write x in terms of y (rearrange the equation), then interchange y and x. that ll be f inverse of x. hope this helps. post what you think should be the answer.

Answer 2

That's the problem though, I don't know how to switch the equation

Answer 3

okay i ll show you below. uh-oh. do you mean f=x/(7x+2) up there?
if yes then,


(hmm tricky one. you hafta use hook or crook to get it)
nope now you can carry on further. :))

and domain and range a problem?