18. Let

.
Then

 

A. 0

B. 1/3

C. 2/3

D. 1

E. Does not exist.

 

Solution: The answer is E

By using the Chain Rule and the Fundamental Theorem of Calculus, we can solve for F’(0) as follows: 

 

Since F’(x) is not defined when x = 0, then F’(0) does not exist.