scheme - What is fixed point? -


i'm rewatching of earlier lectures on sicp. notion of fixed-point bit confusing me. fixed-point procedure: should thinking way, "it's way find fixed-point of given function." given f(2) = 2?

also why new function y maps x / y fixed point?

https://www.youtube.com/watch?v=erhp3r6pbjk&list=pl8fe88aa54363bc46#t=1991

according fixed point (mathematics) on wikipedia:

in mathematics, fixed point (sometimes shortened fixpoint, known invariant point) of function element of function's domain mapped function.

so wrote, f(2) = 2 indicates 2 a fixed point of f.


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