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GATE Electrical 2014 Set 2 | Question: 3

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Ans :- option C

Concept : For real x, (x−1)^2/3= ((x−1^)2)^1/3 = ∣x−1∣^2/3 .This is always ≥0. The smallest possible value of an absolute-power like this is 0, attained when the inside is zero.

 

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