Range of the function \( f(x) \frac{x^{2}+x+2}{x^{2}+x+1} ; x \in \...
Range of the function \( f(x) \frac{x^{2}+x+2}{x^{2}+x+1} ; x \in \mathrm{R} \) is
P
W)
(a) \( (1, \infty) \)
(b) \( (1,11 / 7) \)
(c) \( (1,7 / 3) \)
(d) \( (1,7 / 5) \)
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