2021 ONE(a)

Achievement
Question
Differentiate y=e3xsin2xy = e^{3x}\sin 2x.

*You do not need to simplify your answer.*
Official Answer
dydx=3e3xsin(2x)+e3xcos(2x)2\dfrac{dy}{dx}=3e^{3x}\sin(2x)+e^{3x}\cos(2x)\cdot 2
Grading Criteria

Achievement (u)

  • Correct derivative.

Merit (r)

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Excellence T1

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Excellence T2

-
Video Explanation
NCEA Level 3 Calculus Differentiation 2021 NZQA Exam - Worked Answers by infinityplusone(starts at 0:28)
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