precalc sequences review

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Last updated 2:00 AM on 9/23/26
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6 Terms

1
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arithmetic sequence

has a common difference (d) seperating 2 consequetive terms. add/subtract.

2
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arithmetic recursive formula

an+1= an+d : the next term is the current term + d

3
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arithmetic explicit formula

an= a1 + (n-1) x d

4
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geometric squence

has a common ratio ( r ) seperating 2 consecutive terms. multiplication or division.

5
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geometric recursive formula

an+1= an x r

6
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geometric explicit formula

an= a1 x rn-1