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Recurrence for a GP
## Formula
If:
$$a_n=ar^{n-1}$$
then:
$$a_{n+1}=ra_n$$
and:
$$\frac{a_{n+1}}{a_n}=r$$
provided:
$$a_n\ne0$$
## Usage
- Used to identify a geometric progression from a recurrence relation.
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Recurrence for a GP
## Formula
If:
$$a_n=ar^{n-1}$$
then:
$$a_{n+1}=ra_n$$
and:
$$\frac{a_{n+1}}{a_n}=r$$
provided:
$$a_n\ne0$$
## Usage
- Used to identify a geometric progression from a recurrence relation.
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