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Range of the function f(x) = (x^3+x+2)/(...

Range of the function `f(x) = (x^3+x+2)/(x^2+x+1), x in R` is

A

`(1, infty)`

B

`[1,11/7]`

C

`[1,7/3]`

D

`(1,7/3)`

Text Solution

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The correct Answer is:
C
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