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a
R−{0}
b
R−{-1,0,1}
c
R−{1}
d
R−{-1,1}
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Correct option is B
x+1x>2( clearly, x≠0)⇒ x2+1x>2⇒x2+1|x|>2 ∵x2+1>0⇒ x2+1>2|x|⇒ |x|2−2|x|+1>0⇒(|x|−1)2>0⇒ |x|≠1⇒x≠−1,1∴ x∈R−{−1,0,1}Talk to our academic expert!
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