Sequences, Surds and Sets
Other note source 📚 SEQUENCES, SURDS & SETS Cambridge IGCSE Mathematics 📊 9.1 SEQUENCES Definition & Notation Sequence: A list of numbers following a specific rule. Each number = term . T₁, T₂, T₃ = 1st, 2nd, 3rd terms Tâ‚™ = nth term (general term) Types of Sequences Type Rule Example Formula Arithmetic Common diff (d) 2,6,10,14 Tâ‚™=dn+c Geometric Common ratio (r) 3,6,12,24 Tâ‚™=ar^(n-1) Quadratic 2nd diff constant 2,5,10,17 Tâ‚™=an²+bn+c ...