2015 TWO(a)

Achievement
Question
Differentiate f(x)=x3x25f(x)=\sqrt[5]{x-3x^2}.
Official Answer
15(x3x2)45(16x)\frac{1}{5}(x-3x^2)^{-\frac{4}{5}}\cdot(1-6x)
Grading Criteria

Achievement (u)

  • A correct expression for the derivative.

Merit (r)

-

Excellence T1

-

Excellence T2

-