Edexcel A Level Maths: Pure:复习笔记4.4.1 Geometric Sequences
Geometric Sequences
What do I need to know about geometric sequences?
- In a?geometric sequence,?there is a?common ratio?between consecutive terms in the sequence
- You need to know the?nth?term formula?for a geometric sequence
-
- a?is the first term
- r?is the common ratio
Exam Tip
If you know two terms in a geometric sequence you can find?a?and?d?using simultaneous equations.?
Worked Example
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