Assessment Overview & Difficulty Verdict
The May/June 2026 series for 0606 Additional Mathematics strikes a fair yet demanding balance across the specification. With Paper 1 set strictly as non-calculator and Paper 2 permitting scientific calculators, students are required to demonstrate pristine mental arithmetic, rigorous algebraic manipulations, and sharp geometric reasoning.
Where the Marks Are Concentrated
Calculus remains the cornerstone of the syllabus, accounting for over 50 marks across both papers. High-tariff questions include finding exact area under intersecting rational curves, multi-stage second-derivative integration with boundary conditions, and product/quotient rule applications linked to coordinate geometry.
- Algebra & Functions: Extensive testing on inverse functions, domain/range constraints, and composite functions. Polynomials featured an elegant parameter-solving quartic structure that reduced to a quadratic in \(a^2\).
- Trigonometric Identities & Graphs: Demands precision in radian work, negative angle ranges, and simplifying reciprocal expressions such as \(\cot^2\theta - \mathrm{cosec}^2\theta = -1\).
- Series & Progressions: A strong presence across AP/GP sum-to-infinity proofs and multi-term binomial expansions with negative fractional powers.
Common Examiner Pitfalls & Areas of Mark Loss
Examiners routinely note mark deductions in the following recurring areas:
- Sign and Logarithmic Laws: Failing to isolate terms before taking natural logs, or mishandling log change-of-base rules leading to invalid factorisations.
- Domain Incompatibilities: Overlooking domain restrictions in composite functions \(gf(x)\) and failing to reject extraneous roots when solving exponential/quadratic equations.
- Integration Constant Handling: Forgetting the constant of integration \(c\) in intermediate steps during double integration, or attempting premature decimal rounding on exact non-calculator items.
- Vector Direction Ratios: Mixing up vectors with scalar magnitudes when formulating linear vector pathways like \(\vec{ZY}\).
Preparation & Exam Strategy
Master exact surd and fractional manipulation to secure top bands on Paper 1. When preparing for upcoming series, prioritise integration by parts/substitution techniques, coordinate geometry of circles, and permutations involving discrete case splits.