Answer:
There exist a continuous function which is not differentiable,
For all real number x.
Explanation:
Consider the provided information.
We need to Rewrite the following statements formally using the quantifiers
The two quantifiers are: 'there exists' and 'for all.'
Now use them in order to change the statements.
Part (a) Not all continuous functions are differentiable
The quantifier statement is:
There exist a continuous function which is not differentiable,
Part (b) for real x,2x is never negative.
The quantifier statement is:
For all real number x.