MCQ
$\left[\frac{d}{d x} \sec ^{-1} x\right]_{x=-3}=\ldots \ldots \ldots$
- A$\frac{1}{\sqrt{x^2-1}}$
- B$\frac{-1}{\sqrt{ x ^2-1}}$
- ✓$\frac{1}{6 \sqrt{2}}$
- D$-\frac{1}{6 \sqrt{2}}$
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$y\left( 1 \right) = \frac{\pi }{2}$
probabiliky that $X_1$ and $X_3$ are within earshot of each other is, Here, $\left.{ }^n C_r=\frac{n !}{(n-r) ! r !}\right)$
| $X$ | $1$ | $2$ | $3$ | $4$ | $5$ |
| $P(X)$ | $K^2$ | $2K$ | $K$ | $2K$ | $5K^2$ |
તો $\mathrm{P}(\mathrm{X}> 2)$ મેળવો.