Question

Let f(x)=x^3+2x+1 assume that f^-1exists and has a domain of-infinity and infinity . Simplify each expression. f^-1(1)

Answer 1

since we just saw that
\[f(0)=1\] we know that
\[f^{-1}(1)=0\]

Answer 2

so if we have F(-1) do we have 1

Answer 3

i am not sure what exactly you are asking. if you know
\[f(a)=b\] then you know
\[f^{-1}(b)=a\]