CSCA MathematicsChapter 2: Functions, Derivatives & SequencesIntermediate
Sequences: Arithmetic & Geometric Progressions
等差数列与等比数列的通项与求和 · Node 2.3
General terms, common difference/ratio, sum of first n terms formulas, and recurrence relations.
Chapter Weight: 35% of official examination
Practice This NodeCore Mathematical Axiom
Formula Proof & TrapsCSCA Exam Trap Alert
Neglecting the case q = 1 when computing geometric series sums or dividing by (1 - q).