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Find the least possible value of $n$.
Mathematics 9709 · AS & A Level · Differentiation
Differentiation — practice question
$f$ is an increasing function, defined for values of $x$ with $x > n$, where $n$ is an integer. It is given that $f'(x) = x^2 - 6x + 8$.
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This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Attempts to solve $f'(x)=0$ or checks where $f'(x)>0$ or $f'(x)<0$” …
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