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Recurrence for an AP
## Formula
If:
$$a_n=a+(n-1)d$$
then:
$$a_{n+1}=a_n+d$$
and:
$$a_n-a_{n-1}=d$$
## Usage
- Used to identify whether a sequence follows an arithmetic progression.
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Recurrence for an AP
## Formula
If:
$$a_n=a+(n-1)d$$
then:
$$a_{n+1}=a_n+d$$
and:
$$a_n-a_{n-1}=d$$
## Usage
- Used to identify whether a sequence follows an arithmetic progression.
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