Answers

2014-02-27T23:21:06+08:00
Composition of function is applying the function to the result of applying the function once to a given number. f(f(x)) is f() applied to the result of f(x). This could be done several times.

For exampple, if f(x)=2x. f(f(f(2)))=f(f(4))=f(8)=16.
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