Question

Sequences help. *Question attached below* Will give medal

Answer 1

Can someone guide me with this problem please?

Answer 2

did you write out the first few terms of \(u_n\)?

Answer 3

No :S How do I go about doing this?

Answer 4

\[u_2\] you solve since
\[u_2\times u_1=2\] and
\[u_1=1\]`

Answer 5

Ohhhh. Thank you. I think I can take it from here.

Answer 6

Hmm, I'm having trouble with part (i) :S

Answer 7

\[u_1=1\\
u_2=2\] right?

Answer 8

then since \(u_3\times u_2=2\) you get \(u_3=1\) again

Answer 9

in other words, this is just a silly way to write
\[1,2,1,2,1,2,1,2,1,2,...\]

Answer 10

Yes