🛠️ JEE➗ Maths

Let \(f(x)=\left|\begin{array}{ccc}1+\sin ^2 x & \cos ^2 x & \sin 2 x \\ \sin ^2 x & 1+\cos ^2 x & \sin …

Q1

Let \(f(x)=\left|\begin{array}{ccc}1+\sin ^2 x & \cos ^2 x & \sin 2 x \\ \sin ^2 x & 1+\cos ^2 x & \sin 2 x \\ \sin ^2 x & \cos ^2 x & 1+\sin 2 x\end{array}\right|\), \(x \in\left[\frac{\pi}{6}, \frac{\pi}{3}\right]\). If \(\alpha\) and \(\beta\) respectively are the maximum and the minimum values of \(f\), then

[JEE Main 2023, 1 Feb (Shift 1)]

a

\(
\beta^2-2 \sqrt{\alpha}=\frac{19}{4}
\)

b

\(
\beta^2+2 \sqrt{\alpha}=\frac{19}{4}
\)

c

\(
\alpha^2-\beta^2=4 \sqrt{3}
\)

d

\(
\alpha^2+\beta^2=\frac{9}{2}
\)

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