Q4 of 118 Page 3

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

Given


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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2

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If, find:

i.


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iv.


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