Question

let f(x)=x^3/(x^2+1) find x if the inverse of f(x)=2

Answer 1

can you explain more how you got that?

Answer 2

Sorry, Ignore that.

is \[f^{-1}(x) = 2\]

?

Answer 3

yes

Answer 4

Using this rule:

\[f^{-1}(x) = y \rightarrow f(y) = x\]

It implies:

\[f(2) = x\]

You know what f(x) is, now just substitute the 2 in f(x)

Answer 5

oh ok Thanks!