2017 THREE(a)

Achievement
Question
Differentiate y=xln(3x1)y = x\ln(3x - 1).

*You do not need to simplify your answer.*
Official Answer
dydx=x33x1+ln(3x1)\dfrac{dy}{dx}=x\cdot\dfrac{3}{3x-1}+\ln(3x-1)
Grading Criteria

Achievement (u)

  • Correct derivative.

Merit (r)

-

Excellence T1

-

Excellence T2

-
Video Explanation
NCEA Level 3 Calculus Differentiation 2017 NZQA Exam - Worked Answers by infinityplusone(starts at 49:57)
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