Key learning points

1. A geometric sequence looks like a curve when sketched (common ratio > 1 or < 1).
2. The gradient increases sharply (common ratio > 1 or < 1).
3. Although the graph is continuous, the sequence is not.
4. Each geometric sequence is made up of discrete terms.

Keywords

• Geometric sequence - A geometric sequence is a sequence with a constant multiplicative relationship between successive terms.

• Common ratio - A common ratio is a key feature of a geometric sequence. The constant multiplier between successive terms is called the common ratio.

Common misconception