+956 If f'(x) = 0 for all x, then
a) f(x1) > f(x2) for every x1 > x2
b) f(x1) < f(x2) for every x1 > x2
c) f(x1) > f(x2) for every x1 < x2
d) f(x1) = f(x2) for every x1 < x2
The difference from the last question is (=) instead of (>) -- In case you missed that :)
