Geometric sequences: the nth term, exponential growth and decay, and finding a, r and n from given terms

What this note covers

1. Recognise constant multiplicative change
2. Move between recursion and the nth term
3. Find the first term and ratio from data
4. Solve for a term number
5. Interpret exponential graphs and parameters
6. Evaluate a geometric model in context

6 sections · 10 key terms & formulas · 6 common mistakes