every-periodic-function-is-differentiable-true-or-false-justify-

Question Number 25780 by rita1608 last updated on 14/Dec/17

e v e r y p e r i o d i c f u n c t i o n i s

d i f f e r e n t i a b l e . t r u e o r f a l s e j u s t i f y

Answered by sushmitak last updated on 14/Dec/17

f (x) = {x} (f r a x t i o n a l p a r t o f x)

i s p e r i o d i c b u t n o t d i f f e r t i a b l e

f o r x \in Z