Question

Assume the given function is one-to-one. Find the indicated values:x0123456789f(x)8074265391f(9)=AnswerIf f(x)=9 then x=Answerf^{-1}(3)=AnswerIf f^{-1}(x)=7 then x=?Answer

Answer 1

For a one-to-one function :

F(x) = x ;

→Therefore f(9) = 8

→If f(x) = 9, then x =8

f(3) =7 ,

→then F^-1 (3) = 1/7

→If f^-1(x) = 7 , then x = 1/7

( replace the f(x) value with 9, meaning where y = 9 , x = 8 according to the given table)