Level:
Project ID:
1003124704
Accepted:
1
Clonable:
0
Easy:
1
The \( 10 \)th term of a geometric sequence is \( 1 \) and the \( 15 \)th term is \( -1 \). Find the recursive formula of the sequence.
\( a_1=-1 \), \( a_{n+1}=-a_n \)
\( a_1=1 \), \( a_{n+1}=-a_n \)
\( a_1=-1 \), \( a_{n+1}=a_n \)
\( a_1=1 \), \( a_{n+1}=a_n \)
\( a_1=-1 \), \( a_{n+1}=a_n-1 \)