2024 ONE(a)

Achievement
Question
Differentiate f(x)=(49x4)f(x)=\sqrt{(4-9x^4)}.

*You do not need to simplify your answer.*
Official Answer
f(x)=18x3(49x4)12f'(x)=-18x^3(4-9x^4)^{-\frac{1}{2}}

Or equivalent
Grading Criteria

Achievement (u)

  • Correct derivative.

Merit (r)

-

Excellence T1

-

Excellence T2

-
Video Explanation
2024 NCEA L3 Calculus Exam Walkthrough by infinityplusone(starts at 0:31)
Subscribe