Mathematics Grade 12 45 min

Identify a sequence as explicit or recursive

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1

Is the formula `a_n = 4n - 3` explicit or recursive?

2

Is the formula `a_n = a_{n-1} + 6` with `a_1 = 2` explicit or recursive?

3

A pattern starts with 5 items. Each step adds 3 more items. Is this pattern explicit or recursive?

Sample Practice Questions

Easy
Is the sequence defined by `a_n = n + 10` explicit or recursive?
0.Explicit
1.Recursive
2.Both
3.Neither
Easy
Is the sequence defined by `a_n = a_{n-1} - 2` with `a_1 = 50` explicit or recursive?
0.Explicit
1.Recursive
2.Both
3.Neither
Easy
A sequence starts at 100, and each term is 10 less than the previous. Is this explicit or recursive?
0.Explicit
1.Recursive
2.Both
3.Neither

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