MCQ
જો [$\sum\limits_{i=1}^{2n}{{{\sin }^{-1}}{{x}_{i}}=n\pi ,}$ હોય તો $\sum\limits_{i=1}^{2n}{{{x}_{i}}=................}$
- A$n$
- ✓$2n$
- C$\frac{2(n+1)}{2}$
- Dએકપણ નહીં
$- \frac{\pi}{2}\leq \sin^{-1} x < \frac{\pi}{2}$
$\therefore \sin^{-1} x_i= \frac{\pi}{2}$
$\therefore x_i= \sin \frac{\pi}{2}$
$\therefore x_i = 1$ (બધા $i$ માટે)
$\sum_{i=1}^{2n} x_i = 2n$
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