Question

Write down the first five terms of each sequence
{sn}= {n^2+1}

Answer 1

replace n by 1,2,3, 4, 5
get
\[s_1=1^2+1=2\]
\[s_2=2^2+1=5\]
\[s_3=3^2+1=10\] etc

Answer 2

do you know how to do this kind?

Write out the first five terms of the sequence:
a1 = 3
an = 4 - a(n -1)

Answer 3

yes

Answer 4

\[a_1=3\]
\[a_2=4-a_{2-1}=4-a_1=4-3=1\]

Answer 5

\[a_3=4=a_2=4-1=3\]

Answer 6

\[a_4=4-3=1\] so it looks like you just get 4 and 1

Answer 7

odd example for a recursive formula i must say.