Mathematics for IGCSE & O level - Sequences (Section 2 - No. 32)

Which of these is a quadratic sequence?

5, 10, 15, 20,...

1, 4, 9, 16, ...

2, 6, 18, 54, ...

3, 6, 9, 12, ...

설명

A quadratic sequence is identified by a constant second difference.

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