Question

Given the function f(x) = 3x, find the value of f-1(81)

Answer 1

you need to solve \(3x=81\)

Answer 2

\(f(a) = b \iff f^{-1}(b) = a\)

Answer 3

dooo itt

Answer 4

To find the inverse:

Replace f(x) with y
Switch x's and y's, so put x where y is and x where y is.
Solve for y
Replace y with f^-1(x)

Answer 5

if 3x=y
and x=1/3y
and finv tells you what x you put in given a resultant y
so x=1/3y is your f^-1
y=81
x=1/3*81=27

Answer 6

gimme them medals

Answer 7

You aint pellet

Answer 8

LOL

Answer 9

or just solve 3x=81