Find-all-real-a-such-that-f-x-ax-sinx-is-periodic-u-is-the-fractional-part-function-of-the-real-number-u-

Question Number 4748 by Yozzii last updated on 04/Mar/16

F i n d a l l r e a l a s u c h t h a t

f (x) = {a x + s i n x}

i s p e r i o d i c . {u} i s t h e f r a c t i o n a l - p a r t

f u n c t i o n o f t h e r e a l n u m b e r u .