2020 ONE(a)

Achievement
Question
Differentiate y=(3xx2)5y = (3x - x^2)^5.

*You do not need to simplify your answer.*
Official Answer
dydx=5(3xx2)4(32x)\dfrac{dy}{dx}=5(3x-x^2)^4\cdot(3-2x)
Grading Criteria

Achievement (u)

  • Correct derivative.

Merit (r)

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Excellence T1

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Excellence T2

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Video Explanation
NCEA Level 3 Calculus Differentiation 2020 NZQA Exam - Worked Answers by infinityplusone(starts at 0:38)
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