Can someone please help with with MEI C3 June 2015 Q7 i)?
It says that f(f(x))= x hence write down f^-1(x). Why is f^-1(x)= f(x)?
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- 19-06-2017 17:44
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Last edited by Notnek; 19-06-2017 at 17:52.
- 19-06-2017 17:51