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differentiability in functions (
Posted on 20210219
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a) Prove that there exists a differentiable function f:(0, ∞)>(0, ∞) such that f(f'(x))=x, for all x>0.
b) Prove that there is no differentiable function f:R>R such that f(f'(x))=x, for all x∈R.
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Submitted by
Danish Ahmed Khan
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re: Thought for Part b.
Comment 3 of 3 
(In reply to
Thought for Part b.
by Jer)
https://www.desmos.com/calculator/rebz7gahbg
Posted by
Jer
on 20210220 11:19:35
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