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Double differential equation (Posted on 2008-06-26) Difficulty: 3 of 5
Find all injective functions f, defined for all x>0, satisfying f(f'(x))=-f(x)

No Solution Yet Submitted by Jonathan Lindgren    
Rating: 2.5000 (2 votes)

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  Subject Author Date
Puzzle Thoughts K Sengupta2023-02-15 11:31:28
SolutionNatural logarithmChesca Ciprian2008-06-27 13:57:21
Just Answer (No Solution)Praneeth2008-06-27 02:22:22
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