Level:
Project ID:
2010000702
Source Problem:
Accepted:
0
Clonable:
1
Easy:
0
We are given a sequence \( \left( a_n \right)^{\infty}_{n=1} \) defined recursively by: \( a_1=-1,\ a_2=0\) and \(\ a_{n+2}=a_{n}-a_{n+1}-d\), where \(\ n\in\mathbb{N} \).
Find the value of an unknown constant \( d\in\mathbb{R} \) and of the term \( a_5 \) if \( a_3 = -4 \).
\( d=3,\ a_5=-8 \)
\( d=5,\ a_5=-10 \)
\( d=3,\ a_5=1\)
\( d=5,\ a_5=-9 \)