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

माना \([ x ]\) महत्तम पूर्णांक \(\leq x\) है, जहों \(x \in R\) है। यदि वास्तविक मान फलन \(f(x)=\sqrt{\frac{[x] \mid-2}{[x] \mid-3}}\) का प्रांत \((-\infty, a) \cup[b, c) \cup[4, \infty), a < b < c\), है, तो \(a+b+c\) का मान है

  1. A \(-3\)
  2. B \(1\)
  3. C \(-2\)
  4. D \(8\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(-2\)

Step-by-step Solution

Detailed explanation

For domain, \(\frac{|[x]|-2}{|[x]|-3} \geq 0\) Case \(I:\) When \(|[x]|-2 \geq 0\) and \(|[x]|-3\,>\,0\) \(\therefore x \in(-\infty,-3) \cup[4, \infty] \ldots . .(1)\) Case \(II:\) When \(|[x]|-2 \leq 0\) and \(|[x]|-3\,<\,0\) \(\therefore \mathrm{x} \in[-2,3) \quad \ldots(2)\)…
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