Question 19: Which of the four functions listed below has no extremes?

Considering the function \(y = \frac{{2x – 1}}{{x + 1}}\) we have \(y’ = \frac{3}{{{{\left( {x + 1} \) right)}^2}}} > 0\) with \(x \ne – 1\) so the function has no extremes.

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