1
AP EAPCET 2025 - 21st May Morning Shift
MCQ (Single Correct Answer)
+1
-0

$$ \mathop {\lim }\limits_{x \to \infty }\left[\frac{n+1}{n^2+1^2}+\frac{n+2}{n^2+2^2}+\frac{n+3}{n^2+3^2}+\ldots+\frac{n+2 n}{n^2+4 n^2}\right]= $$

A

$\tan ^{-1} 2+\frac{1}{2} \log 3$

B

$\frac{\pi}{4}+\frac{1}{2} \log 3$

C

$\tan ^{-1} 2+\frac{1}{2} \log 5$

D

$\frac{\pi}{4}+\frac{1}{2} \log 5$

2
AP EAPCET 2025 - 21st May Morning Shift
MCQ (Single Correct Answer)
+1
-0

$$ \int_0^\pi \frac{x \sin x}{1+\cos ^2 x} d x= $$

A

$\frac{\pi^2}{4}$

B

$\frac{\pi}{2}$

C

$\frac{\pi^2}{2}$

D

$\frac{\pi}{4}$

3
AP EAPCET 2025 - 21st May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The differential equation corresponding to the family of parabolas whose axis is along $x=1$ is

A

$\frac{d^2 y}{d x^2}-(x-1) \frac{d y}{d x}=0$

B

$(x-1) \frac{d^2 y}{d x^2}-\frac{d y}{d x}=0$

C

$\frac{d^2 y}{d x^2}+(x-1) \frac{d y}{d x}-y=0$

D

$(x-1) \frac{d^2 y}{d x^2}+\frac{d y}{d x}=0$

4
AP EAPCET 2025 - 21st May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The general solution of the equation $\frac{d y}{d x}+\frac{1}{x} y=\frac{1}{x} e^x$

A

$y=x e^x+c$

B

$y=x e^x+c e^{-x}$

C

$y=\frac{e^x+c}{x}$

D

$y=\frac{e^{-x}+c x}{x}$