Question

f f(x) = log3 (x + 1), what is f−^1 (2)?

1

8

10

27

Answer 1

\[\large f(x)=\log_3(x+1) \]
right?

Answer 2

yes

Answer 3

\[\large y=\log_3(x+1) \]
\[\large 3^y=x+1 \]
\[\large x=3^y-1 \]
\[\large f^{-1}(x)=3^x-1 \]

Answer 4

therefore
\[\large f^{-1}(2)=3^2-1=9-1=8 \]

Answer 5

ty :)

Answer 6

u r welcome