Question
फलन $\operatorname{cosec}^{-1}\left(\frac{1+ x }{ x }\right)$ का प्रांत है -
$\frac{1}{x} \in(-\infty,-2] \cup[0, \infty)$
$x \in\left[-\frac{1}{2}, 0\right) \cup(0, \infty)$
$x \in\left[-\frac{1}{2}, \infty\right)-\{0\}$
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|
प्राप्तांक |
छात्रों की संख्या |
|
$0-10$ |
$2$ |
|
$10-20$ |
$18$ |
|
$20-30$ |
$30$ |
|
$30-40$ |
$45$ |
|
$40-50$ |
$35$ |
|
$50-60$ |
$20$ |
|
$60-70$ |
$6$ |
|
$70-80$ |
$3$ |
$(A)$ $\alpha=0, k=8$
$(b)$ $4 \alpha-k+8=0$
$(C)$ $\operatorname{det}(P \operatorname{adj}(Q))=2^9$
$(D)$ $\operatorname{det}(Q \operatorname{adj}(P))=2^{13}$
$\int_0^{\pi / 2} \mathrm{f}(\sin 2 \mathrm{x}) \cdot \sin \mathrm{xdx}+\alpha \int_0^{\pi / 4} \mathrm{f}(\cos 2 \mathrm{x}) \cdot \cos \mathrm{xdx}=0$
है, तो $\alpha$ का मान है