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

If x is real and `k = (x^2 -x + 1)/(x^2+x+1)` then: (A)`1/3 le k le 3` (B) `k le 5` (C) `k le 0` (D) none

A

`1/3 le k le 3`

B

`k ge 5`

C

`k le 0`

D

None of these

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The correct Answer is:
A
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