2026 IGCSE Additional Mathematics May/June 0606/22 Q3

2026 IGCSE Additional Mathematics May/June 0606/22 Q3

6 marks
  1. Differentiate \(y=\sqrt{x+1}+\cos(5x+3)\) with respect to \(x\).[3]
  2. Find \(\int\sec^2\dfrac x3\,\mathrm dx\).[3]

Solution:

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Answer:(a) \(\dfrac1{2\sqrt{x+1}}-5\sin(5x+3)\) (b) \(3\tan\dfrac x3+C\).

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