Arithmetic & Geometric Series | IAL Maths | Cambridge 9709 · Edexcel YMA01 · OxfordAQA 9660

Arithmetic and geometric series for International A Level Maths: sequences and sigma notation, recurrence relations, the nth term and sum of an AP and a GP, the sum to infinity and when a GP converges, and finding a and d or a and r with simultaneous equations. 📝 Edexcel YMA01 notes: Sequences and series (free): https://www.thinka.ai/en-GB/Pearson-E... 📱 Thinka app: practice questions and notes: https://www.thinka.ai/en-GB/download?... AI tutor Emma teaches from the Thinka notes, one step at a time, with every line of every example worked in full. A Board Check shows where Cambridge 9709 (Paper 1), Edexcel YMA01/YPM01 (unit P2) and OxfordAQA 9660 (AS unit P1) test this topic, and what only one board asks for. ⏱️ Chapters 0:00 Intro, why it matters and key terms 1:56 Sequences and sigma notation 5:44 The limit of a sequence (OxfordAQA) 7:30 Arithmetic progressions: the nth term 11:14 The sum of an arithmetic series 16:04 Geometric progressions: the nth term 19:11 The sum of a geometric series 22:15 Sum to infinity 25:36 Finding a and d, or a and r 28:47 Board Check: Cambridge, Edexcel, OxfordAQA 29:45 Exam tips 31:40 Recap 🔗 Study resources 📝 Edexcel YMA01 notes: Sequences and series (free): https://www.thinka.ai/en-GB/Pearson-E... 📝 Cambridge 9709 notes: Series: https://www.thinka.ai/en-GB/Cambridge... 📝 OxfordAQA 9660 notes: Sequences and series: https://www.thinka.ai/en-GB/Oxford-AQ... 📝 Edexcel YPM01 notes: Sequences and series: https://www.thinka.ai/en-GB/Pearson-E... 📊 Edexcel YMA01 past paper analysis (January 2026): https://www.thinka.ai/en-GB/past-pape... 📊 Cambridge 9709 past paper analysis (June 2026): https://www.thinka.ai/en-GB/past-pape... ✍️ Edexcel YMA01 practice paper with answers: https://www.thinka.ai/en-GB/past-pape... 📚 More 📖 All Cambridge 9709 Mathematics notes: https://www.thinka.ai/en-GB/Cambridge... 📖 All Edexcel YMA01 Mathematics notes: https://www.thinka.ai/en-GB/Pearson-E... 📖 All OxfordAQA 9660 Mathematics notes: https://www.thinka.ai/en-GB/Oxford-AQ... ▶️ Playlist: A Level Mathematics Video Course | Cambridge 9709 · Edexcel IAL · OxfordAQA 9660 →    • A Level Mathematics Video Course | Cambrid...   🤖 About this video Emma is an AI tutor: her image and voice are AI-generated. The lesson follows Thinka's study notes and does not reproduce any exam board's past-paper questions. #ALevelMaths #GeometricSeries #ALevel