Question

let f(x)= 3x-1 find f(1/x)

Answer 1

alright this is much like the last problem you did where you had f(f(x))
so what ever in the parenthesis after f will be your x

Answer 2

so just simply replace x with 1/x in your function. What do you get?

Answer 3

3/x-1

Answer 4

if you mean (3/x)-1

Answer 5

you can simplify it more i believe (3-x)/x

Answer 6

i exactly meant that :)

Answer 7

or 1/x(3-x

Answer 8

ok
so if I have 1/F(x) i just replace the x with 3x-1 what do i do with the f?

Answer 9

so now you have f(1/f(x))?

Answer 10

then I have 1/ 3(x-1)

Answer 11

or do you have 1/f(x) if it's 1/f(x) then you just take the reciprocal which would be 1/(3x-1)

Answer 12

ok that would make better sense