ECZ 2025 · O-Level Paper 1 — Introduction To Calculus
Find ∫(6x2 - x + 3) dx.
- A. 2x3 - x22 + 3x + C
- B. 2x3 - x2 + 3x + C
- C. 18x2 - x + 3 + C
- D. 2x3 - x22 + 3x
Verified working — step 1
Integration reverses differentiation: raise each power by 1, then divide by the NEW power. Finish with + C, the constant that differentiating would have erased.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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