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The range of the function f(x)=(x^2+x+2)...

The range of the function `f(x)=(x^2+x+2)/(x^2+x+1),x in R ,` is `(1,oo)` (b) `(1,(11)/7)` `(1,7/3)` (d) `(1,7/5)`

A

`(1,infty)`

B

(1,11/7)

C

(1,7/3]

D

(1,7/5)

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The correct Answer is:
C
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