Question
Question: If x = a is the point of local maxima for y = f(x), then which of the following is always true ?...
If x = a is the point of local maxima for y = f(x), then which of the following is always true ?
A
f '(1) = 0
B
f '(1) = 0, f '(1) < 0
C
f '(1) = 0, f '(1) > 0
D
None of these
Answer
None of these
Explanation
Solution
At local maximum f(1) = 0, f '(1) < 0