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JEE Advanced Mathematics question

MathematicsApplication of DerivativesJEE Advanced

Let , . Then is

Answer: (B)

Solution

f'(x) = 6 x x - 6 x x + 12 x = 6 x ( x - x + 2) = 6 x[( x - Missing argument for \tfrac\tfrac + Missing argument for \tfrac\tfrac74].

The bracket is always positive and on

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Question ID VK-109446