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4 Cards in this Set
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Arithmetic sequence
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In an arithmetic sequence, the difference between terms is constant. For example, 2, 5, 8, 11, 14, etc.
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Arithmetic sequence formula
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To find the nth term, an, of an arithmetic sequence with a common difference d, use an = a1 + (n-1)d
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Geometric sequence
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In a geometric sequence, the ratio between terms is constant. For example, 2, 6, 18, 54, 72, etc.
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Geometric sequence formula
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To find the nth term, an, of a geometric sequence with common ratio r use an = a1 • r^(n-1)
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