Question

Determine whether the following is arithmetic, geometric, or neither
1,4,9,16

Answer 1

neither

Explanation:

first differences of 3, 5, 7 are not the same.

ratios of 4/1, 9/4, 16/9 are not the same.

The sequence is neither arithmetic nor geometric.

_____

The sequence is quadratic: a[n] = n^2.