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JEE Advanced Mathematics question

MathematicsApplication of DerivativesJEE Advanced

Let and for . Then

Answer: (A),(D)

Solution

. Since , is strictly decreasing on .

- For : , so , i.e. . (.) Hence is m.i. in . (a) ✓, (b) ✗. - For : , so $φ'(x) <

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Question ID VK-109450