JEE Advanced 2025 Mathematics question
Let ℝ denote the set of all real numbers. Let f : ℝ → ℝ be defined by
f(x) =
Then which of the following statements is (are) TRUE?
- (A)The point x = 0 is a point of local maxima of f
- (B)The point x = 0 is a point of local minima of fCorrect
- (C)Number of points of local maxima of f in the interval [π, 6π] is 3Correct
- (D)Number of points of local minima of f in the interval [2π, 4π] is 1Correct
Answer: (B),(C),(D)
Solution
, with , (so f is continuous). Near 0, , so f(x) > f(0): x = 0 is a local minimum (B true, A false). , so the other
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Question ID VK-035473