Question

Help - Sequences - Please - Medal

Answer 1

Did you try plugging it in and continuing?

Answer 2

So we know \(\Large a_{1}=6\) right?
Well if we try and find \(a_{2}\) we get: \(\Large a_{2}=-7+a_{2-1}\)
The \(\Large a_{2-1}\) is just \(\Large a_{1}\)

So: \(\Large a_{2}=-7+a_{1}\)

Which is -7+6, which is -1

Answer 3

So we have \(\Large a_{1}=1\) and \(\Large a_{2}=-1\)

Answer 4

\(\Large a_{3}=-7+a_{2}\)
\(\Large a_{3}= -8\)

\(\Large a_{4}=-7+a_{3}\)
\(\Large a_{4}=-15\)

Think you can find \(\Large a_{5}\)?