# How do you find the common ratio of an infinite geometric series?

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To find the common ratio (r) of an infinite geometric series, you divide any term in the series by its preceding term. This can be represented as ( r = \frac{a_{n+1}}{a_n} ), where ( a_{n+1} ) is any term after the first term ( a_1 ), and ( a_n ) is the term preceding ( a_{n+1} ).

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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