Q. 43.6( 8 Votes )

If, show that f[f{f(x)}] = x.

Answer :


We need to prove that f[f{f(x)}] = x.

First, we will evaluate f{f(x)}.

Now, we will evaluate f[f{f(x)}]

f[f{f(x)}] = x

Thus, f[f{f(x)}] = x

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