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Question Number 117848 by john santu last updated on 14/Oct/20

D e t e r m i n e a l l f u n c t i o n s f : R \to R

s u c h t h a t t h e e q u a l i t y f ([x] y) = f (x) [f (y)]

h o l d s f o r a l l x, y \in R . H e r e b y [x] w e

d e n o t e t h e g r e a t e s t i n t e g e r n o t e x c e e d i n g x .