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  • Let f:R-->R be the identity function .what is fof ?

Let f:R-->R be the identity function .what is fof ?

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Solution:   f:R ightarrow R  be the identity function.

                            f(x)=x,xin R

                (fof)(x)=f(f(x))=f(x)=x.  

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Deependra Verma

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