Q.
Complete set of values of x satisfying inequality ||x−1|−5|<2x−5 is
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a
52,∞
b
113, ∞
c
(−1, ∞)
d
−∞,13
answer is B.
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Detailed Solution
We have, ||x−1|−5|<2x−5∴ 2x−5>0⇒ x>52 (1)Now from (1), −2x+5<|x−1|−5<2x−5⇒−2x+10<|x−1|<2xCase I : x≥1∴ −2x+1011 and x>−1⇒ x>11/3 (2)Case II : x < 1∴ −2x+10<1−x<2x⇒ x>9 and x>1/3⇒ x>9, not possible as x < 1Therefore, x∈(11/3,∞)
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