Basic Derivative Recall in Optimization

00:00 3 marks

Consider the function $f(x) = x^2 – 8x + 15$.

(a) Find $f'(x)$.

(b) Determine the value of $x$ for which $f(x)$ is minimized.

Hint Hint

Hint

For part (a), apply the power rule. For part (b), set the derivative equal to zero and solve for $x$.

Answer Answer
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Answer Answer

Complete Answer

a) $f'(x)=2x-8$; b) $x=4$

Mark Scheme Mark Scheme

Answer Explanation Answer Explanation

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Common Errors Common Errors

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Formula Booklet

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