WBJEE 2025 Math Paper

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Question : 4 of 75

Marks: +1, -0

Let φ(x)=f(x)+f(2a−x),x∈[0,2a] and f′′(x)>0 for all x∈[0,a]. Then φ(x) is

increasing on [0,a].
decreasing on [0,a].
increasing on [0,2a].
decreasing on [0,2a].

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