if x is real and k = x^2 -x+1/x^2+x+1,then which is correct ? (a) k belongs to [1/3,3] (b)k=or >3 (c) k =or<1/3

Asked by PRERNA | 30th Nov, 2013, 08:43: PM

Expert Answer:

Hence the correct option is (a).

Answered by Vimala Ramamurthy | 2nd Dec, 2013, 09:09: AM

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