🛠️ JEE➗ Maths

Let \(g(x)=f(x)+f(1-x)\) and \(f^{\prime \prime}(x)>0, x \in(0,1)\). If \(\mathrm{g}\) is decreasing in the interval …

Q1

Let \(g(x)=f(x)+f(1-x)\) and \(f^{\prime \prime}(x)>0, x \in(0,1)\). If \(\mathrm{g}\) is decreasing in the interval \((0, \alpha)\) and increasing in the interval \((\alpha, 1)\), then \(\tan ^{-1}(2 \alpha)+\tan ^{-1}\left(\frac{1}{\alpha}\right)+\tan ^{-1}\left(\frac{\alpha+1}{\alpha}\right)\) is equal to:


[JEE Main 2023, 10 Apr (Shift 2)]

a

\(\frac{3 \pi}{2}\)

b

\(\pi\)

c

\(\frac{5 \pi}{4}\)

d

\(\frac{3 \pi}{4}\)

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