Question

F(x)= x-1/x+1 if f=f(x)

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

f(x)=

x−1

x+1

fof(x)=

f(x)−1

f(x)+1

=

x−1

x+1

−1

x−1

x+1

+1

=

x+1−x+1

x+1+x−1

=x

i)(fofof)(x)=f(fof(x))=f(x)=

x−1

x+1

ii)(fofofof)(x)=fof(fof(x))=fof(x)=x