Is every continuous function differentiable?

Every continuous function is differentiable.

Every continuous function is :

The negation of the statement “All continuous functions are differentiable” is

The negative of the statement "All continuous functions are differentiable".

Which of the following is not true? (A) A polynomial function is always continuous (B) A continuous function is always differentiable (C) A differentiable function is always continuous (D) None of these

Assertion (A) : A continuous function is always differentiable. Reason (R ) : A differentiable function is always continuous.

The function f(x)=|cos sx| is everywhere continuous and differentiable everywhere continuous but not differentiable at (2n+1)(pi)/(2),n in Z .neither continuous not differentiable at (2x+1)(pi)/(2),n in Z

"All continuous function are not differentiable." Justify your answer with an example

The function y=|2sin x| is continuous but it is not differentiable at