Algebra › Section L · Sequences, series, and the binomial theorem › Topic L.2
Arithmetic sequences
Some sequences climb like a staircase — the same step, every time. An arithmetic sequence adds a fixed common difference at each term, which makes its behaviour predictable from just two pieces of information: where it starts and how big the step is.
In this topic
- The staircase pattern
- The common difference
- The general term
- Worked example: jumping far ahead
- Is this number even in the sequence?
- Worked example: two terms reveal everything
- Arithmetic sequences in the wild
- Common mistakes to avoid
- Key takeaways
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