Edexcel A Level Maths: Pure:復習筆記4.3.1 Arithmetic Sequences
Arithmetic Sequences
What do I need to know about arithmetic sequences?
- In an?arithmetic sequence, the difference between consecutive terms in the sequence is constant
- That constant difference is known as the?common difference?of the sequence
- You need to know the?nth?term formula?for an arithmetic sequence
-
- a?is the first term
- d?is the common difference
Exam Tip
If you know two terms in an arithmetic sequence you can find?a?and?d?using simultaneous equations.?
Worked Example
轉載自savemyexams
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