Find the value of a4for the recurrence relation an=2an-1+3, with a0=6.
A. 320
B. 221
C. 141
D. 65
Answer:C
Find the value of a4for the recurrence relation an=2an-1+3, with a0=6.
A. 320
 B. 221
 C. 141
 D. 65

Explanation: When n=1, a1=2a0+3, Now a2=2a1+3. By substitution, we get a2=2(2a0+3)+3.
