ECZ 2024 · O-Level Paper 1 — Introduction To Calculus
The equation of a curve is y = x - 2x2 + 1x3. Find dydx.
- A. 1 - 4x - 3x4
- B. 1 - 2x - 3x4
- C. 1 - 4x + 3x4
- D. x - 4x - 3x4
Verified working — step 1
Before differentiating, rewrite the fraction with a negative index: 1x3 = x-3. Then apply the power rule to every term: multiply by the power, lower the power by 1.The full step-by-step working and final answer, plus the video lesson for this topic, are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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