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If x is real and k = (x^2 - x+1)/(x^2 + ...

If x is real and `k = (x^2 - x+1)/(x^2 + x +1)` then

A

`1/3 le `k `le 3`

B

`k ge 5`

C

`k le 0`

D

none

Text Solution

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The correct Answer is:
A
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