Higher November 2019 Unit 1 Q3
3.
(a) Write down the first three terms of the sequence whose \(n\)th term is given by \(n^2 - 6\). [2]
1st term = ……………… 2nd term = ……………… 3rd term = ………………
(b) Write down an expression for the \(n\)th term of the following sequence. [2]
5, 11, 17, 23, …
| Scheme | Marks | Comments |
|---|---|---|
| −5 −2 3 | B2 | B1 for two correct (in correct position) OR B1 for −6, −5, −2 |
| Scheme | Marks | Comments |
|---|---|---|
| \(6n - 1\) or equivalent | B2 | B1 for sight of \(6n\). Mark final answer. |