Question

Let
f(x) = \frac { 1 } { 6} x + 9 , \quad 1 \le x \le 2

The domain of f^{-1} is the interval [A,B]

Answer 1

do you know
domain of inverse function is same as range of original function ?

so you just need to find range of f(x)
can u ?

Answer 2

how do you find the range?

Answer 3

you just plug in extreme values of x in domain!

so put x =1, f(1) =...
put x=2, f(2) =..?

Answer 4

Thank you!

Answer 5

welcome ^_^

Answer 6

if you want me to verify your range, tell me what u get :)

Answer 7

thats okay thank you though! i submitted it already and it said it was right.

Answer 8

awesome! :)