1
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

The area of the region $\left\{(x, y): x y<8,1 \leq y \leq x^2\right\}$ is

A

$8 \ln 2-\frac{14}{3}$

B

$16 \ln 2-\frac{14}{3}$

C

$16 \ln 2-6$

D

$8 \ln 2-\frac{7}{3}$

2
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

If $\alpha$ is a root of $x^4=1$ with negative principal argument, then the principle argument of $\Delta(A)$, where $\Delta(A)=\left|\begin{array}{ccc}1 & 1 & 1 \\ \alpha^n & \alpha^{n+1} & \alpha^{n+3} \\ \frac{1}{\alpha^{n+1}} & \frac{1}{\alpha^n} & 0\end{array}\right|$

A

$\frac{5 \pi}{4}$

B

$\frac{\pi}{4}$

C

$-\frac{3 \pi}{4}$

D

$-\frac{\pi}{4}$

3
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

Let $f(x)=\cos ^{-1}\left(2 x \sqrt{1-x^2}\right)$, then $f^{\prime}(0.6)$ equals to

A

$\frac{5}{2}$

B

$-\frac{5}{2}$

C

$\frac{2}{5}$

D

$-\frac{2}{5}$

4
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

The period of the function $f(x)=3 \sin \frac{\pi x}{3}+4 \cos \frac{\pi x}{4}$ is

A

23

B

25

C

24

D

34

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