1.Relation and Function
hard

फलन

$\mathrm{f}(\mathrm{x})=\frac{1}{\sqrt{[\mathrm{x}]^2-3[\mathrm{x}]-10}}$, (जहाँ $[\mathrm{x}]$ महत्तम पूर्णांक $\leq \mathrm{x}$ है, का प्रांत है)

A

$(-\infty,-2) \cup(5, \infty)$

B

$(-\infty,-3] \cup[6, \infty)$

C

$(-\infty,-2) \cup[6, \infty)$

D

$(-\infty,-3] \cup(5, \infty)$

(JEE MAIN-2023)

Solution

$\text { Sol. }[x]^2-3[x]-10 > 0$

${[x] < -2 \text { or }[x] > 5}$

Standard 12
Mathematics

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