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Sholpan [36]
3 years ago
6

What's the formula for sequence when the difference is different?

Mathematics
1 answer:
Elina [12.6K]3 years ago
3 0
If it is first difference, we use : nth term = a1 + (n - 1)d

If it is 2nd difference, we use : nth term = a + (n - 1)d + ½(n - 1)(n - 2)c
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