H2 Maths CAQs/Mistakes Bank

🫩 MATHS Mistakes EQUATIONS & INEQUALITIES 🎯 Reminders! ● 0 < e x < blablabla 💫 Qualitative Explanation — Why Power cannot be an Even Number [ Tutorial Q8i ] From the graph, as x → +∞, y → +∞ and as x → -∞, y → -∞ However, if n is even and a > 0, then as x → +∞, y → +∞ and as x → -∞, y → +∞, which contradicts the observation from the graph If n is even and a < 0, then as x → +∞, y → -∞ and as x → -∞, y → -∞, which also contradicts the observation from the graph Hence, n cannot be an even number 💫 Positive/Negative Regions of Product of Functions [ 2025 RVHS JC1 LT1 Q3biv ]

SEQUENCES & SERIES 🧠 Standard Question — Using Formulas [ 2019 A Level Paper 1 Q8d ] 🧠 Standard Question — Breaking Up a Summation [ 2025 HCI Prelim Paper 1 Q7 ]

🧠 CAQ — Reforming the given Sigma Notation Format [ 2025 VJC Prelim Paper 1 Q6d ]

🧠 Standard Question — Banks & Loans [ 2026 JC2 Timed Practice 2 Q2 ]

💫 Basic — General Term [ Tutorial 2A Q1 ]

💫 Difference < XXX [ Tutorial 2A Q5 ] 💫 Relationship between Expansion & Derivative [ Tutorial 2A Q8 ]

💫 Method of Difference [ 2024 SAJC Prelim P1 Q3ii ]

🤯 Why S n cannot be a Quadratic Polynomial [ 2025 Specimen Paper 2 Q2a ] The first four terms of a sequence of numbers are 4, 2, 2 and 4. The sum of the first n terms of this sequence is S n . (a) Explain why S, cannot be a quadratic polynomial in n.

🤯 Interesting ‘Show’ Question [ 2016 A Level Paper 1 Q4i ]