$$ \int_0^{\pi / 2} \frac{\sin x}{1+\cos x+\sin x} d x= $$
$\frac{\pi}{2}+\frac{1}{2} \log 2$
$\frac{\pi}{4}-\frac{1}{2} \log 2$
$\frac{\pi}{4}$
$\frac{3 \pi}{4}+\log 2$
$$ \mathop {\lim }\limits_{x \to \infty }\left[\frac{n+1}{n^2+1^2}+\frac{n+2}{n^2+2^2}+\frac{n+3}{n^2+3^2}+\ldots+\frac{n+2 n}{n^2+4 n^2}\right]= $$
$\tan ^{-1} 2+\frac{1}{2} \log 3$
$\frac{\pi}{4}+\frac{1}{2} \log 3$
$\tan ^{-1} 2+\frac{1}{2} \log 5$
$\frac{\pi}{4}+\frac{1}{2} \log 5$
$$ \int_0^\pi \frac{x \sin x}{1+\cos ^2 x} d x= $$
$\frac{\pi^2}{4}$
$\frac{\pi}{2}$
$\frac{\pi^2}{2}$
$\frac{\pi}{4}$
The differential equation corresponding to the family of parabolas whose axis is along $x=1$ is
$\frac{d^2 y}{d x^2}-(x-1) \frac{d y}{d x}=0$
$(x-1) \frac{d^2 y}{d x^2}-\frac{d y}{d x}=0$
$\frac{d^2 y}{d x^2}+(x-1) \frac{d y}{d x}-y=0$
$(x-1) \frac{d^2 y}{d x^2}+\frac{d y}{d x}=0$
AP EAPCET Papers
All year-wise previous year question papers