Level:
Project ID:
1003124701
Accepted:
1
Clonable:
0
Easy:
1
The third term of a geometric sequence is \( 9 \) and the common ratio is \( 3 \). Find the recursive formula of the sequence.
\( a_1=1 \), \( a_{n+1}=3a_n \)
\( a_1=3 \), \( a_{n+1}=a_n+3 \)
\( a_1=9 \), \( a_{n+1}=3a_n \)
\( a_1=3 \), \( a_{n+1}=a_n^2 \)
\( a_1=1\), \(a_{n+1}=\frac13a_n \)