2018 TWO(a)

Achievement
Question
Differentiate y=3x+cosec5x.y = 3\sqrt{x} + \mathrm{cosec}\,5x.
Official Answer
32x125cosec5xcot5x\frac{3}{2}x^{-\frac{1}{2}}-5\cosec 5x\cot 5x
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 2018 NZQA Exam - Worked Answers by infinityplusone(starts at 20:35)
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