Question
Which term is 13122?
The geometric sequence is 2, -6, 18, -54
tn=ar^(n-1)
13122=2(-3)^(n-1)
6561=(-3)^(n-1)
log6561=n-1log-3
You can't divide with negative logs, how do I isolate n?
The geometric sequence is 2, -6, 18, -54
tn=ar^(n-1)
13122=2(-3)^(n-1)
6561=(-3)^(n-1)
log6561=n-1log-3
You can't divide with negative logs, how do I isolate n?