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JEE Mains · Maths · STD 12 - 1. relation and function

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)

  1. A \((-\infty,-2) \cup(5, \infty)\)
  2. B \((-\infty,-3] \cup[6, \infty)\)
  3. C \((-\infty,-2) \cup[6, \infty)\)
  4. D \((-\infty,-3] \cup(5, \infty)\)
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Answer & Solution

Correct Answer

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

Step-by-step Solution

Detailed explanation

\(\text { Sol. }[x]^2-3[x]-10 > 0\) \({[x] < -2 \text { or }[x] > 5}\)
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