Suppose function f(x) and its derivative f'(x) is well-defined for all real-valued x. It is known that f(x) has only one stationary point x=1. Is it correct to conclude that x=1 is either a maximum or minimum point for f(x)? Question 2 Select one: True False
Question
Suppose function f(x) and its derivative f'(x) is well-defined for all real-valued x.
It is known that f(x) has only one stationary point x=1.
Is it correct to conclude that x=1 is either a maximum or minimum point for f(x)?
Question 2 Select one: True False
Solution
False. A stationary point is a point where the derivative of a function is zero. However, not all stationary points are maximum or minimum points. A stationary point could also be a point of inflection, where the function changes concavity. Therefore, without additional information, we cannot conclude that x=1 is either a maximum or minimum point for f(x).
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