12 The terms, \(u _ { n }\), of a periodic sequence are defined by
$$u _ { 1 } = 3 \text { and } u _ { n + 1 } = \frac { - 6 } { u _ { n } }$$
12
- \(\quad\) Find \(u _ { 2 } , u _ { 3 }\) and \(u _ { 4 }\)
[0pt]
[2 marks]
12 - State the period of the sequence.
12 - Find the value of \(\sum _ { n = 1 } ^ { 101 } u _ { n }\)
[0pt]
[2 marks]