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Positively Real (Posted on 2012-09-09) Difficulty: 3 of 5
R+denotes the set of positive real numbers.

Determine all possible functions f:R+ R+ such that:

f(f(x)) = 12x - f(x) for all x > 0.

No Solution Yet Submitted by K Sengupta    
Rating: 5.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Some Thoughtsre: Explanation of my solution.Steve Herman2012-09-10 08:46:21
Explanation of my solution.Chris, PhD2012-09-10 06:02:57
Some ThoughtsPossible solutionSteve Herman2012-09-09 20:21:44
Hints/TipsPossible AnswerChris, PhD2012-09-09 18:44:18
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