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

જો \(\mathrm{R}=\left\{(\mathrm{x}, \mathrm{y}): \mathrm{x}, \mathrm{y} \in \mathrm{Z}, \mathrm{x}^{2}+3 \mathrm{y}^{2} \leq 8\right\}\) એ પૂર્ણાક સંખ્યાના ગણ \(\mathrm{Z}\) પર સંબંધ દર્શાવે તો \(\mathrm{R}^{-1}\) નો પ્રદેશ ગણ મેળવો 

  1. A \(\{-2,-1,1,2\}\)
  2. B \(\{-1,0,1\}\)
  3. C \(\{-2,-1,0,1,2\}\)
  4. D \(\{0,1\}\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(\{-1,0,1\}\)

Step-by-step Solution

Detailed explanation

\(R=\left\{(x, y): x, y \in z, x^{2}+3 y^{2} \leq 8\right\}\) For domain of \(\mathrm{R}^{-1}\) Collection of all integral of y's For \(x=0, \quad 3 y^{2} \leq 8\) \(\Rightarrow \mathrm{y} \in\{-1,0,1\}\)
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