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Let f (x) =(x^(2) +x-1)/(x ^(2) - x+1),...

Let `f (x) =(x^(2) +x-1)/(x ^(2) - x+1),` then the largest value of `f (x) AA x in [-1, 3]` is:

A

`3/5`

B

`5/3`

C

`1`

D

`4/3`

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The correct Answer is:
B
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