Edexcel IGCSEAdditional MathematicsGeneral Applications1 Mark
Given that $y = (3x-1)^4$, find $\frac{\text{d}y}{\text{d}x}$.
AA. $4(3x-1)^3$
BB. $12(3x-1)^3$
CC. $(3x-1)^3$
DD. $3(3x-1)^3$
✓ Correct Answer
The correct answer is B: B. $12(3x-1)^3$
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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