1
AP EAPCET 2025 - 22nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $y=\tan ^{-1}\left(\frac{x}{1+2 x^2}\right)+\tan ^{-1}\left(\frac{x}{1+6 x^2}\right)$, then $\frac{d y}{d x}=$

A

$\frac{4}{16 x^2+1}-\frac{3}{9 x^2+1}$

B

$\frac{3}{9 x^2+1}-\frac{1}{x^2+1}$

C

$\frac{3}{9 x^2+1}-\frac{2}{4 x^2+1}$

D

$\frac{1}{9 x^2+1}-\frac{1}{x^2+1}$

2
AP EAPCET 2025 - 22nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the tangent drawn at the point $\left(x_1, y_1\right), x_1, y_1 \in N$ on the curve $y=x^4-2 x^3+x^2+5 x$ passes through origin, then $x_1+y_1=$

A

5

B

4

C

7

D

6

3
AP EAPCET 2025 - 22nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following functions is monotonically increasing in its domain?

A

$f(x)=\log (1+x)-x+\frac{x^2}{2}$

B

$g(x)=2 \tan ^{-1} x-x-1$

C

$h(x)=4 \cos x+x$

D

$u(x)=\log (1+x)-\frac{x}{x+1}$

4
AP EAPCET 2025 - 22nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $\beta$ is an angle between the normals drawn to the curve $x^2+3 y^2=9$ at the points $(3 \cos \theta, \sqrt{3} \sin \theta)$ and $(-3 \sin \theta, \sqrt{3} \cos \theta), \theta \in\left(0, \frac{\pi}{2}\right)$, then

A

$\tan \beta=\frac{1}{\sqrt{3}} \sec 2 \theta$

B

$\cot \beta=\sqrt{3} \operatorname{cosec} 2 \theta$

C

$\sqrt{3} \cot \beta=\sin 2 \theta$

D

$\cot \beta=\frac{1}{\sqrt{2}} \sec 2 \theta$