Let f(x) be a polynomial function such that f(4)= -1, f'(4)=2 and f"(4)=0. If x<4, then f"(x)<0 and if x>4, then f"(x)>0.
The point (4,-1) is which of the following for the graph of f?
How do you figure out this problem. Which answer choice is right and why?
a) relative maximum
b) relative minimum
c) critical value
d) inflection point
e) none of the above