Mathematics for IGCSE & O level - Sequences (Section 2 - No. 6)

Which of the following sequences is a quadratic sequence?

5, 10, 15, 20, ...

1, 3, 5, 7, ...

1, 4, 7, 10, ...

2, 4, 8, 16, ...

설명

A quadratic sequence has a constant second difference.

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