MCQ
The value of the integral $\int\limits_0^\infty {} $ $e ^{-2x}\, (\sin\, 2x + \cos\, 2x)\, dx =$
- A$1$
- B$- 2$
- ✓$1/2$
- Dzero
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$x+(\cos \gamma) y+(\cos \beta) z=0$
$(\cos \gamma) x+y+(\cos \alpha) z=0$
$(\cos \beta) x+(\cos \alpha) y+z=0$
has :
$\int^\frac{2}{3}_{0}\frac{\text{dx}}{4+9\text{x}^{2}}\text{equals}$
$\frac{\pi}{6}$
$\frac{\pi}{12}$
$\frac{\pi}{24}$
$\frac{\pi}{4}$